1 | <?php |
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2 | /** |
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3 | * Category Template Tags and API. |
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4 | * |
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5 | * @package WordPress |
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6 | * @subpackage Template |
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7 | */ |
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8 | |
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9 | /** |
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10 | * Retrieve category link URL. |
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11 | * |
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12 | * @since 1.0.0 |
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13 | * @see get_term_link() |
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14 | * |
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15 | * @param int|object $category Category ID or object. |
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16 | * @return string Link on success, empty string if category does not exist. |
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17 | */ |
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18 | function get_category_link( $category ) { |
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19 | if ( ! is_object( $category ) ) |
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20 | $category = (int) $category; |
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21 | |
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22 | $category = get_term_link( $category, 'category' ); |
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23 | |
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24 | if ( is_wp_error( $category ) ) |
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25 | return ''; |
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26 | |
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27 | return $category; |
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28 | } |
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29 | |
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30 | /** |
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31 | * Retrieve category parents with separator. |
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32 | * |
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33 | * @since 1.2.0 |
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34 | * |
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35 | * @param int $id Category ID. |
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36 | * @param bool $link Optional, default is false. Whether to format with link. |
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37 | * @param string $separator Optional, default is '/'. How to separate categories. |
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38 | * @param bool $nicename Optional, default is false. Whether to use nice name for display. |
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39 | * @param array $visited Optional. Already linked to categories to prevent duplicates. |
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40 | * @return string |
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41 | */ |
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42 | function get_category_parents( $id, $link = false, $separator = '/', $nicename = false, $visited = array() ) { |
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43 | $chain = ''; |
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44 | $parent = &get_category( $id ); |
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45 | if ( is_wp_error( $parent ) ) |
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46 | return $parent; |
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47 | |
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48 | if ( $nicename ) |
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49 | $name = $parent->slug; |
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50 | else |
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51 | $name = $parent->name; |
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52 | |
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53 | if ( $parent->parent && ( $parent->parent != $parent->term_id ) && !in_array( $parent->parent, $visited ) ) { |
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54 | $visited[] = $parent->parent; |
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55 | $chain .= get_category_parents( $parent->parent, $link, $separator, $nicename, $visited ); |
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56 | } |
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57 | |
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58 | if ( $link ) |
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59 | $chain .= '<a href="' . get_category_link( $parent->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $parent->name ) ) . '">'.$name.'</a>' . $separator; |
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60 | else |
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61 | $chain .= $name.$separator; |
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62 | return $chain; |
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63 | } |
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64 | |
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65 | /** |
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66 | * Retrieve post categories. |
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67 | * |
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68 | * @since 0.71 |
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69 | * @uses $post |
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70 | * |
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71 | * @param int $id Optional, default to current post ID. The post ID. |
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72 | * @return array |
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73 | */ |
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74 | function get_the_category( $id = false ) { |
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75 | $categories = get_the_terms( $id, 'category' ); |
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76 | if ( ! $categories ) |
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77 | $categories = array(); |
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78 | |
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79 | $categories = array_values( $categories ); |
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80 | |
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81 | foreach ( array_keys( $categories ) as $key ) { |
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82 | _make_cat_compat( $categories[$key] ); |
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83 | } |
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84 | |
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85 | // Filter name is plural because we return alot of categories (possibly more than #13237) not just one |
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86 | return apply_filters( 'get_the_categories', $categories ); |
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87 | } |
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88 | |
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89 | /** |
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90 | * Sort categories by name. |
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91 | * |
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92 | * Used by usort() as a callback, should not be used directly. Can actually be |
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93 | * used to sort any term object. |
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94 | * |
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95 | * @since 2.3.0 |
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96 | * @access private |
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97 | * |
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98 | * @param object $a |
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99 | * @param object $b |
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100 | * @return int |
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101 | */ |
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102 | function _usort_terms_by_name( $a, $b ) { |
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103 | return strcmp( $a->name, $b->name ); |
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104 | } |
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105 | |
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106 | /** |
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107 | * Sort categories by ID. |
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108 | * |
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109 | * Used by usort() as a callback, should not be used directly. Can actually be |
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110 | * used to sort any term object. |
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111 | * |
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112 | * @since 2.3.0 |
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113 | * @access private |
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114 | * |
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115 | * @param object $a |
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116 | * @param object $b |
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117 | * @return int |
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118 | */ |
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119 | function _usort_terms_by_ID( $a, $b ) { |
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120 | if ( $a->term_id > $b->term_id ) |
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121 | return 1; |
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122 | elseif ( $a->term_id < $b->term_id ) |
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123 | return -1; |
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124 | else |
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125 | return 0; |
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126 | } |
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127 | |
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128 | /** |
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129 | * Retrieve category name based on category ID. |
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130 | * |
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131 | * @since 0.71 |
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132 | * |
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133 | * @param int $cat_ID Category ID. |
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134 | * @return string Category name. |
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135 | */ |
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136 | function get_the_category_by_ID( $cat_ID ) { |
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137 | $cat_ID = (int) $cat_ID; |
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138 | $category = &get_category( $cat_ID ); |
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139 | if ( is_wp_error( $category ) ) |
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140 | return $category; |
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141 | return $category->name; |
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142 | } |
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143 | |
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144 | /** |
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145 | * Retrieve category list in either HTML list or custom format. |
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146 | * |
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147 | * @since 1.5.1 |
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148 | * |
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149 | * @param string $separator Optional, default is empty string. Separator for between the categories. |
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150 | * @param string $parents Optional. How to display the parents. |
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151 | * @param int $post_id Optional. Post ID to retrieve categories. |
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152 | * @return string |
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153 | */ |
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154 | function get_the_category_list( $separator = '', $parents='', $post_id = false ) { |
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155 | global $wp_rewrite; |
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156 | $categories = get_the_category( $post_id ); |
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157 | if ( !is_object_in_taxonomy( get_post_type( $post_id ), 'category' ) ) |
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158 | return apply_filters( 'the_category', '', $separator, $parents ); |
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159 | |
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160 | if ( empty( $categories ) ) |
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161 | return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents ); |
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162 | |
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163 | $rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"'; |
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164 | |
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165 | $thelist = ''; |
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166 | if ( '' == $separator ) { |
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167 | $thelist .= '<ul class="post-categories">'; |
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168 | foreach ( $categories as $category ) { |
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169 | $thelist .= "\n\t<li>"; |
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170 | switch ( strtolower( $parents ) ) { |
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171 | case 'multiple': |
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172 | if ( $category->parent ) |
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173 | $thelist .= get_category_parents( $category->parent, true, $separator ); |
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174 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>' . $category->name.'</a></li>'; |
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175 | break; |
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176 | case 'single': |
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177 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>'; |
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178 | if ( $category->parent ) |
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179 | $thelist .= get_category_parents( $category->parent, false, $separator ); |
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180 | $thelist .= $category->name.'</a></li>'; |
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181 | break; |
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182 | case '': |
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183 | default: |
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184 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>' . $category->name.'</a></li>'; |
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185 | } |
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186 | } |
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187 | $thelist .= '</ul>'; |
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188 | } else { |
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189 | $i = 0; |
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190 | foreach ( $categories as $category ) { |
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191 | if ( 0 < $i ) |
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192 | $thelist .= $separator; |
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193 | switch ( strtolower( $parents ) ) { |
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194 | case 'multiple': |
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195 | if ( $category->parent ) |
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196 | $thelist .= get_category_parents( $category->parent, true, $separator ); |
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197 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>' . $category->name.'</a>'; |
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198 | break; |
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199 | case 'single': |
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200 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>'; |
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201 | if ( $category->parent ) |
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202 | $thelist .= get_category_parents( $category->parent, false, $separator ); |
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203 | $thelist .= "$category->name</a>"; |
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204 | break; |
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205 | case '': |
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206 | default: |
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207 | $thelist .= '<a href="' . get_category_link( $category->term_id ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '" ' . $rel . '>' . $category->name.'</a>'; |
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208 | } |
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209 | ++$i; |
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210 | } |
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211 | } |
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212 | return apply_filters( 'the_category', $thelist, $separator, $parents ); |
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213 | } |
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214 | |
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215 | |
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216 | /** |
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217 | * Check if the current post in within any of the given categories. |
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218 | * |
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219 | * The given categories are checked against the post's categories' term_ids, names and slugs. |
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220 | * Categories given as integers will only be checked against the post's categories' term_ids. |
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221 | * |
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222 | * Prior to v2.5 of WordPress, category names were not supported. |
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223 | * Prior to v2.7, category slugs were not supported. |
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224 | * Prior to v2.7, only one category could be compared: in_category( $single_category ). |
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225 | * Prior to v2.7, this function could only be used in the WordPress Loop. |
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226 | * As of 2.7, the function can be used anywhere if it is provided a post ID or post object. |
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227 | * |
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228 | * @since 1.2.0 |
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229 | * |
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230 | * @param int|string|array $category Category ID, name or slug, or array of said. |
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231 | * @param int|object $_post Optional. Post to check instead of the current post. (since 2.7.0) |
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232 | * @return bool True if the current post is in any of the given categories. |
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233 | */ |
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234 | function in_category( $category, $post = null ) { |
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235 | if ( empty( $category ) ) |
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236 | return false; |
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237 | |
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238 | return has_term( $category, 'category', $post ); |
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239 | } |
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240 | |
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241 | /** |
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242 | * Display the category list for the post. |
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243 | * |
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244 | * @since 0.71 |
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245 | * |
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246 | * @param string $separator Optional, default is empty string. Separator for between the categories. |
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247 | * @param string $parents Optional. How to display the parents. |
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248 | * @param int $post_id Optional. Post ID to retrieve categories. |
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249 | */ |
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250 | function the_category( $separator = '', $parents='', $post_id = false ) { |
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251 | echo get_the_category_list( $separator, $parents, $post_id ); |
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252 | } |
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253 | |
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254 | /** |
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255 | * Retrieve category description. |
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256 | * |
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257 | * @since 1.0.0 |
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258 | * |
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259 | * @param int $category Optional. Category ID. Will use global category ID by default. |
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260 | * @return string Category description, available. |
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261 | */ |
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262 | function category_description( $category = 0 ) { |
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263 | return term_description( $category, 'category' ); |
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264 | } |
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265 | |
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266 | /** |
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267 | * Display or retrieve the HTML dropdown list of categories. |
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268 | * |
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269 | * The list of arguments is below: |
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270 | * 'show_option_all' (string) - Text to display for showing all categories. |
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271 | * 'show_option_none' (string) - Text to display for showing no categories. |
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272 | * 'orderby' (string) default is 'ID' - What column to use for ordering the |
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273 | * categories. |
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274 | * 'order' (string) default is 'ASC' - What direction to order categories. |
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275 | * 'show_last_update' (bool|int) default is 0 - See {@link get_categories()} |
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276 | * 'show_count' (bool|int) default is 0 - Whether to show how many posts are |
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277 | * in the category. |
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278 | * 'hide_empty' (bool|int) default is 1 - Whether to hide categories that |
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279 | * don't have any posts attached to them. |
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280 | * 'child_of' (int) default is 0 - See {@link get_categories()}. |
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281 | * 'exclude' (string) - See {@link get_categories()}. |
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282 | * 'echo' (bool|int) default is 1 - Whether to display or retrieve content. |
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283 | * 'depth' (int) - The max depth. |
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284 | * 'tab_index' (int) - Tab index for select element. |
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285 | * 'name' (string) - The name attribute value for select element. |
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286 | * 'id' (string) - The ID attribute value for select element. Defaults to name if omitted. |
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287 | * 'class' (string) - The class attribute value for select element. |
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288 | * 'selected' (int) - Which category ID is selected. |
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289 | * 'taxonomy' (string) - The name of the taxonomy to retrieve. Defaults to category. |
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290 | * |
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291 | * The 'hierarchical' argument, which is disabled by default, will override the |
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292 | * depth argument, unless it is true. When the argument is false, it will |
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293 | * display all of the categories. When it is enabled it will use the value in |
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294 | * the 'depth' argument. |
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295 | * |
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296 | * @since 2.1.0 |
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297 | * |
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298 | * @param string|array $args Optional. Override default arguments. |
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299 | * @return string HTML content only if 'echo' argument is 0. |
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300 | */ |
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301 | function wp_dropdown_categories( $args = '' ) { |
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302 | $defaults = array( |
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303 | 'show_option_all' => '', 'show_option_none' => '', |
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304 | 'orderby' => 'id', 'order' => 'ASC', |
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305 | 'show_last_update' => 0, 'show_count' => 0, |
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306 | 'hide_empty' => 1, 'child_of' => 0, |
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307 | 'exclude' => '', 'echo' => 1, |
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308 | 'selected' => 0, 'hierarchical' => 0, |
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309 | 'name' => 'cat', 'id' => '', |
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310 | 'class' => 'postform', 'depth' => 0, |
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311 | 'tab_index' => 0, 'taxonomy' => 'category', |
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312 | 'hide_if_empty' => false |
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313 | ); |
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314 | |
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315 | $defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0; |
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316 | |
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317 | // Back compat. |
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318 | if ( isset( $args['type'] ) && 'link' == $args['type'] ) { |
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319 | _deprecated_argument( __FUNCTION__, '3.0', '' ); |
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320 | $args['taxonomy'] = 'link_category'; |
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321 | } |
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322 | |
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323 | $r = wp_parse_args( $args, $defaults ); |
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324 | |
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325 | if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) { |
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326 | $r['pad_counts'] = true; |
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327 | } |
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328 | |
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329 | $r['include_last_update_time'] = $r['show_last_update']; |
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330 | extract( $r ); |
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331 | |
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332 | $tab_index_attribute = ''; |
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333 | if ( (int) $tab_index > 0 ) |
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334 | $tab_index_attribute = " tabindex=\"$tab_index\""; |
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335 | |
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336 | $categories = get_terms( $taxonomy, $r ); |
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337 | $name = esc_attr( $name ); |
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338 | $class = esc_attr( $class ); |
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339 | $id = $id ? esc_attr( $id ) : $name; |
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340 | |
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341 | if ( ! $r['hide_if_empty'] || ! empty($categories) ) |
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342 | $output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n"; |
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343 | else |
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344 | $output = ''; |
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345 | |
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346 | if ( empty($categories) && ! $r['hide_if_empty'] && !empty($show_option_none) ) { |
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347 | $show_option_none = apply_filters( 'list_cats', $show_option_none ); |
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348 | $output .= "\t<option value='-1' selected='selected'>$show_option_none</option>\n"; |
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349 | } |
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350 | |
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351 | if ( ! empty( $categories ) ) { |
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352 | |
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353 | if ( $show_option_all ) { |
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354 | $show_option_all = apply_filters( 'list_cats', $show_option_all ); |
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355 | $selected = ( '0' === strval($r['selected']) ) ? " selected='selected'" : ''; |
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356 | $output .= "\t<option value='0'$selected>$show_option_all</option>\n"; |
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357 | } |
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358 | |
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359 | if ( $show_option_none ) { |
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360 | $show_option_none = apply_filters( 'list_cats', $show_option_none ); |
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361 | $selected = ( '-1' === strval($r['selected']) ) ? " selected='selected'" : ''; |
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362 | $output .= "\t<option value='-1'$selected>$show_option_none</option>\n"; |
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363 | } |
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364 | |
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365 | if ( $hierarchical ) |
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366 | $depth = $r['depth']; // Walk the full depth. |
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367 | else |
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368 | $depth = -1; // Flat. |
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369 | |
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370 | $output .= walk_category_dropdown_tree( $categories, $depth, $r ); |
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371 | } |
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372 | if ( ! $r['hide_if_empty'] || ! empty($categories) ) |
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373 | $output .= "</select>\n"; |
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374 | |
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375 | |
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376 | $output = apply_filters( 'wp_dropdown_cats', $output ); |
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377 | |
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378 | if ( $echo ) |
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379 | echo $output; |
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380 | |
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381 | return $output; |
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382 | } |
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383 | |
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384 | /** |
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385 | * Display or retrieve the HTML list of categories. |
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386 | * |
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387 | * The list of arguments is below: |
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388 | * 'show_option_all' (string) - Text to display for showing all categories. |
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389 | * 'orderby' (string) default is 'ID' - What column to use for ordering the |
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390 | * categories. |
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391 | * 'order' (string) default is 'ASC' - What direction to order categories. |
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392 | * 'show_last_update' (bool|int) default is 0 - See {@link |
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393 | * walk_category_dropdown_tree()} |
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394 | * 'show_count' (bool|int) default is 0 - Whether to show how many posts are |
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395 | * in the category. |
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396 | * 'hide_empty' (bool|int) default is 1 - Whether to hide categories that |
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397 | * don't have any posts attached to them. |
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398 | * 'use_desc_for_title' (bool|int) default is 1 - Whether to use the |
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399 | * description instead of the category title. |
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400 | * 'feed' - See {@link get_categories()}. |
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401 | * 'feed_type' - See {@link get_categories()}. |
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402 | * 'feed_image' - See {@link get_categories()}. |
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403 | * 'child_of' (int) default is 0 - See {@link get_categories()}. |
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404 | * 'exclude' (string) - See {@link get_categories()}. |
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405 | * 'exclude_tree' (string) - See {@link get_categories()}. |
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406 | * 'echo' (bool|int) default is 1 - Whether to display or retrieve content. |
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407 | * 'current_category' (int) - See {@link get_categories()}. |
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408 | * 'hierarchical' (bool) - See {@link get_categories()}. |
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409 | * 'title_li' (string) - See {@link get_categories()}. |
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410 | * 'depth' (int) - The max depth. |
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411 | * |
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412 | * @since 2.1.0 |
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413 | * |
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414 | * @param string|array $args Optional. Override default arguments. |
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415 | * @return string HTML content only if 'echo' argument is 0. |
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416 | */ |
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417 | function wp_list_categories( $args = '' ) { |
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418 | $defaults = array( |
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419 | 'show_option_all' => '', 'show_option_none' => __('No categories'), |
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420 | 'orderby' => 'name', 'order' => 'ASC', |
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421 | 'show_last_update' => 0, 'style' => 'list', |
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422 | 'show_count' => 0, 'hide_empty' => 1, |
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423 | 'use_desc_for_title' => 1, 'child_of' => 0, |
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424 | 'feed' => '', 'feed_type' => '', |
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425 | 'feed_image' => '', 'exclude' => '', |
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426 | 'exclude_tree' => '', 'current_category' => 0, |
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427 | 'hierarchical' => true, 'title_li' => __( 'Categories' ), |
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428 | 'echo' => 1, 'depth' => 0, |
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429 | 'taxonomy' => 'category' |
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430 | ); |
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431 | |
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432 | $r = wp_parse_args( $args, $defaults ); |
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433 | |
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434 | if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) |
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435 | $r['pad_counts'] = true; |
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436 | |
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437 | if ( isset( $r['show_date'] ) ) |
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438 | $r['include_last_update_time'] = $r['show_date']; |
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439 | |
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440 | if ( true == $r['hierarchical'] ) { |
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441 | $r['exclude_tree'] = $r['exclude']; |
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442 | $r['exclude'] = ''; |
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443 | } |
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444 | |
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445 | if ( !isset( $r['class'] ) ) |
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446 | $r['class'] = ( 'category' == $r['taxonomy'] ) ? 'categories' : $r['taxonomy']; |
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447 | |
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448 | extract( $r ); |
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449 | |
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450 | if ( !taxonomy_exists($taxonomy) ) |
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451 | return false; |
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452 | |
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453 | $categories = get_categories( $r ); |
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454 | |
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455 | $output = ''; |
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456 | if ( $title_li && 'list' == $style ) |
---|
457 | $output = '<li class="' . esc_attr( $class ) . '">' . $title_li . '<ul>'; |
---|
458 | |
---|
459 | if ( empty( $categories ) ) { |
---|
460 | if ( ! empty( $show_option_none ) ) { |
---|
461 | if ( 'list' == $style ) |
---|
462 | $output .= '<li>' . $show_option_none . '</li>'; |
---|
463 | else |
---|
464 | $output .= $show_option_none; |
---|
465 | } |
---|
466 | } else { |
---|
467 | if( !empty( $show_option_all ) ) |
---|
468 | if ( 'list' == $style ) |
---|
469 | $output .= '<li><a href="' . get_bloginfo( 'url' ) . '">' . $show_option_all . '</a></li>'; |
---|
470 | else |
---|
471 | $output .= '<a href="' . get_bloginfo( 'url' ) . '">' . $show_option_all . '</a>'; |
---|
472 | |
---|
473 | if ( empty( $r['current_category'] ) && ( is_category() || is_tax() || is_tag() ) ) { |
---|
474 | $current_term_object = get_queried_object(); |
---|
475 | if ( $r['taxonomy'] == $current_term_object->taxonomy ) |
---|
476 | $r['current_category'] = get_queried_object_id(); |
---|
477 | } |
---|
478 | |
---|
479 | if ( $hierarchical ) |
---|
480 | $depth = $r['depth']; |
---|
481 | else |
---|
482 | $depth = -1; // Flat. |
---|
483 | |
---|
484 | $output .= walk_category_tree( $categories, $depth, $r ); |
---|
485 | } |
---|
486 | |
---|
487 | if ( $title_li && 'list' == $style ) |
---|
488 | $output .= '</ul></li>'; |
---|
489 | |
---|
490 | $output = apply_filters( 'wp_list_categories', $output, $args ); |
---|
491 | |
---|
492 | if ( $echo ) |
---|
493 | echo $output; |
---|
494 | else |
---|
495 | return $output; |
---|
496 | } |
---|
497 | |
---|
498 | /** |
---|
499 | * Display tag cloud. |
---|
500 | * |
---|
501 | * The text size is set by the 'smallest' and 'largest' arguments, which will |
---|
502 | * use the 'unit' argument value for the CSS text size unit. The 'format' |
---|
503 | * argument can be 'flat' (default), 'list', or 'array'. The flat value for the |
---|
504 | * 'format' argument will separate tags with spaces. The list value for the |
---|
505 | * 'format' argument will format the tags in a UL HTML list. The array value for |
---|
506 | * the 'format' argument will return in PHP array type format. |
---|
507 | * |
---|
508 | * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'. |
---|
509 | * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC'. |
---|
510 | * |
---|
511 | * The 'number' argument is how many tags to return. By default, the limit will |
---|
512 | * be to return the top 45 tags in the tag cloud list. |
---|
513 | * |
---|
514 | * The 'topic_count_text_callback' argument is a function, which, given the count |
---|
515 | * of the posts with that tag, returns a text for the tooltip of the tag link. |
---|
516 | * |
---|
517 | * The 'exclude' and 'include' arguments are used for the {@link get_tags()} |
---|
518 | * function. Only one should be used, because only one will be used and the |
---|
519 | * other ignored, if they are both set. |
---|
520 | * |
---|
521 | * @since 2.3.0 |
---|
522 | * |
---|
523 | * @param array|string $args Optional. Override default arguments. |
---|
524 | * @return array Generated tag cloud, only if no failures and 'array' is set for the 'format' argument. |
---|
525 | */ |
---|
526 | function wp_tag_cloud( $args = '' ) { |
---|
527 | $defaults = array( |
---|
528 | 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45, |
---|
529 | 'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC', |
---|
530 | 'exclude' => '', 'include' => '', 'link' => 'view', 'taxonomy' => 'post_tag', 'echo' => true |
---|
531 | ); |
---|
532 | $args = wp_parse_args( $args, $defaults ); |
---|
533 | |
---|
534 | $tags = get_terms( $args['taxonomy'], array_merge( $args, array( 'orderby' => 'count', 'order' => 'DESC' ) ) ); // Always query top tags |
---|
535 | |
---|
536 | if ( empty( $tags ) || is_wp_error( $tags ) ) |
---|
537 | return; |
---|
538 | |
---|
539 | foreach ( $tags as $key => $tag ) { |
---|
540 | if ( 'edit' == $args['link'] ) |
---|
541 | $link = get_edit_tag_link( $tag->term_id, $tag->taxonomy ); |
---|
542 | else |
---|
543 | $link = get_term_link( intval($tag->term_id), $tag->taxonomy ); |
---|
544 | if ( is_wp_error( $link ) ) |
---|
545 | return false; |
---|
546 | |
---|
547 | $tags[ $key ]->link = $link; |
---|
548 | $tags[ $key ]->id = $tag->term_id; |
---|
549 | } |
---|
550 | |
---|
551 | $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args |
---|
552 | |
---|
553 | $return = apply_filters( 'wp_tag_cloud', $return, $args ); |
---|
554 | |
---|
555 | if ( 'array' == $args['format'] || empty($args['echo']) ) |
---|
556 | return $return; |
---|
557 | |
---|
558 | echo $return; |
---|
559 | } |
---|
560 | |
---|
561 | /** |
---|
562 | * Default text for tooltip for tag links |
---|
563 | * |
---|
564 | * @param integer $count number of posts with that tag |
---|
565 | * @return string text for the tooltip of a tag link. |
---|
566 | */ |
---|
567 | function default_topic_count_text( $count ) { |
---|
568 | return sprintf( _n('%s topic', '%s topics', $count), number_format_i18n( $count ) ); |
---|
569 | } |
---|
570 | |
---|
571 | /** |
---|
572 | * Default topic count scaling for tag links |
---|
573 | * |
---|
574 | * @param integer $count number of posts with that tag |
---|
575 | * @return integer scaled count |
---|
576 | */ |
---|
577 | function default_topic_count_scale( $count ) { |
---|
578 | return round(log10($count + 1) * 100); |
---|
579 | } |
---|
580 | |
---|
581 | |
---|
582 | /** |
---|
583 | * Generates a tag cloud (heatmap) from provided data. |
---|
584 | * |
---|
585 | * The text size is set by the 'smallest' and 'largest' arguments, which will |
---|
586 | * use the 'unit' argument value for the CSS text size unit. The 'format' |
---|
587 | * argument can be 'flat' (default), 'list', or 'array'. The flat value for the |
---|
588 | * 'format' argument will separate tags with spaces. The list value for the |
---|
589 | * 'format' argument will format the tags in a UL HTML list. The array value for |
---|
590 | * the 'format' argument will return in PHP array type format. |
---|
591 | * |
---|
592 | * The 'tag_cloud_sort' filter allows you to override the sorting. |
---|
593 | * Passed to the filter: $tags array and $args array, has to return the $tags array |
---|
594 | * after sorting it. |
---|
595 | * |
---|
596 | * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'. |
---|
597 | * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC' or |
---|
598 | * 'RAND'. |
---|
599 | * |
---|
600 | * The 'number' argument is how many tags to return. By default, the limit will |
---|
601 | * be to return the entire tag cloud list. |
---|
602 | * |
---|
603 | * The 'topic_count_text_callback' argument is a function, which given the count |
---|
604 | * of the posts with that tag returns a text for the tooltip of the tag link. |
---|
605 | * |
---|
606 | * @todo Complete functionality. |
---|
607 | * @since 2.3.0 |
---|
608 | * |
---|
609 | * @param array $tags List of tags. |
---|
610 | * @param string|array $args Optional, override default arguments. |
---|
611 | * @return string |
---|
612 | */ |
---|
613 | function wp_generate_tag_cloud( $tags, $args = '' ) { |
---|
614 | global $wp_rewrite; |
---|
615 | $defaults = array( |
---|
616 | 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 0, |
---|
617 | 'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC', |
---|
618 | 'topic_count_text_callback' => 'default_topic_count_text', |
---|
619 | 'topic_count_scale_callback' => 'default_topic_count_scale', 'filter' => 1, |
---|
620 | ); |
---|
621 | |
---|
622 | if ( !isset( $args['topic_count_text_callback'] ) && isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) { |
---|
623 | $body = 'return sprintf ( |
---|
624 | _n(' . var_export($args['single_text'], true) . ', ' . var_export($args['multiple_text'], true) . ', $count), |
---|
625 | number_format_i18n( $count ));'; |
---|
626 | $args['topic_count_text_callback'] = create_function('$count', $body); |
---|
627 | } |
---|
628 | |
---|
629 | $args = wp_parse_args( $args, $defaults ); |
---|
630 | extract( $args ); |
---|
631 | |
---|
632 | if ( empty( $tags ) ) |
---|
633 | return; |
---|
634 | |
---|
635 | $tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args ); |
---|
636 | if ( $tags_sorted != $tags ) { // the tags have been sorted by a plugin |
---|
637 | $tags = $tags_sorted; |
---|
638 | unset($tags_sorted); |
---|
639 | } else { |
---|
640 | if ( 'RAND' == $order ) { |
---|
641 | shuffle($tags); |
---|
642 | } else { |
---|
643 | // SQL cannot save you; this is a second (potentially different) sort on a subset of data. |
---|
644 | if ( 'name' == $orderby ) |
---|
645 | uasort( $tags, create_function('$a, $b', 'return strnatcasecmp($a->name, $b->name);') ); |
---|
646 | else |
---|
647 | uasort( $tags, create_function('$a, $b', 'return ($a->count > $b->count);') ); |
---|
648 | |
---|
649 | if ( 'DESC' == $order ) |
---|
650 | $tags = array_reverse( $tags, true ); |
---|
651 | } |
---|
652 | } |
---|
653 | |
---|
654 | if ( $number > 0 ) |
---|
655 | $tags = array_slice($tags, 0, $number); |
---|
656 | |
---|
657 | $counts = array(); |
---|
658 | $real_counts = array(); // For the alt tag |
---|
659 | foreach ( (array) $tags as $key => $tag ) { |
---|
660 | $real_counts[ $key ] = $tag->count; |
---|
661 | $counts[ $key ] = $topic_count_scale_callback($tag->count); |
---|
662 | } |
---|
663 | |
---|
664 | $min_count = min( $counts ); |
---|
665 | $spread = max( $counts ) - $min_count; |
---|
666 | if ( $spread <= 0 ) |
---|
667 | $spread = 1; |
---|
668 | $font_spread = $largest - $smallest; |
---|
669 | if ( $font_spread < 0 ) |
---|
670 | $font_spread = 1; |
---|
671 | $font_step = $font_spread / $spread; |
---|
672 | |
---|
673 | $a = array(); |
---|
674 | |
---|
675 | foreach ( $tags as $key => $tag ) { |
---|
676 | $count = $counts[ $key ]; |
---|
677 | $real_count = $real_counts[ $key ]; |
---|
678 | $tag_link = '#' != $tag->link ? esc_url( $tag->link ) : '#'; |
---|
679 | $tag_id = isset($tags[ $key ]->id) ? $tags[ $key ]->id : $key; |
---|
680 | $tag_name = $tags[ $key ]->name; |
---|
681 | $a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . esc_attr( call_user_func( $topic_count_text_callback, $real_count ) ) . "' style='font-size: " . |
---|
682 | ( $smallest + ( ( $count - $min_count ) * $font_step ) ) |
---|
683 | . "$unit;'>$tag_name</a>"; |
---|
684 | } |
---|
685 | |
---|
686 | switch ( $format ) : |
---|
687 | case 'array' : |
---|
688 | $return =& $a; |
---|
689 | break; |
---|
690 | case 'list' : |
---|
691 | $return = "<ul class='wp-tag-cloud'>\n\t<li>"; |
---|
692 | $return .= join( "</li>\n\t<li>", $a ); |
---|
693 | $return .= "</li>\n</ul>\n"; |
---|
694 | break; |
---|
695 | default : |
---|
696 | $return = join( $separator, $a ); |
---|
697 | break; |
---|
698 | endswitch; |
---|
699 | |
---|
700 | if ( $filter ) |
---|
701 | return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args ); |
---|
702 | else |
---|
703 | return $return; |
---|
704 | } |
---|
705 | |
---|
706 | /** |
---|
707 | * Callback for comparing tags based on name |
---|
708 | * |
---|
709 | * @since 3.1.0 |
---|
710 | * @access private |
---|
711 | */ |
---|
712 | function _wp_tag_cloud_name_sort_cb( $a, $b ) { |
---|
713 | return strnatcasecmp( $a->name, $b->name ); |
---|
714 | } |
---|
715 | |
---|
716 | /** |
---|
717 | * Callback for comparing tags based on count |
---|
718 | * |
---|
719 | * @since 3.1.0 |
---|
720 | * @access private |
---|
721 | */ |
---|
722 | function _wp_tag_cloud_count_sort_cb( $a, $b ) { |
---|
723 | return ( $a->count > $b->count ); |
---|
724 | } |
---|
725 | |
---|
726 | // |
---|
727 | // Helper functions |
---|
728 | // |
---|
729 | |
---|
730 | /** |
---|
731 | * Retrieve HTML list content for category list. |
---|
732 | * |
---|
733 | * @uses Walker_Category to create HTML list content. |
---|
734 | * @since 2.1.0 |
---|
735 | * @see Walker_Category::walk() for parameters and return description. |
---|
736 | */ |
---|
737 | function walk_category_tree() { |
---|
738 | $args = func_get_args(); |
---|
739 | // the user's options are the third parameter |
---|
740 | if ( empty($args[2]['walker']) || !is_a($args[2]['walker'], 'Walker') ) |
---|
741 | $walker = new Walker_Category; |
---|
742 | else |
---|
743 | $walker = $args[2]['walker']; |
---|
744 | |
---|
745 | return call_user_func_array(array( &$walker, 'walk' ), $args ); |
---|
746 | } |
---|
747 | |
---|
748 | /** |
---|
749 | * Retrieve HTML dropdown (select) content for category list. |
---|
750 | * |
---|
751 | * @uses Walker_CategoryDropdown to create HTML dropdown content. |
---|
752 | * @since 2.1.0 |
---|
753 | * @see Walker_CategoryDropdown::walk() for parameters and return description. |
---|
754 | */ |
---|
755 | function walk_category_dropdown_tree() { |
---|
756 | $args = func_get_args(); |
---|
757 | // the user's options are the third parameter |
---|
758 | if ( empty($args[2]['walker']) || !is_a($args[2]['walker'], 'Walker') ) |
---|
759 | $walker = new Walker_CategoryDropdown; |
---|
760 | else |
---|
761 | $walker = $args[2]['walker']; |
---|
762 | |
---|
763 | return call_user_func_array(array( &$walker, 'walk' ), $args ); |
---|
764 | } |
---|
765 | |
---|
766 | /** |
---|
767 | * Create HTML list of categories. |
---|
768 | * |
---|
769 | * @package WordPress |
---|
770 | * @since 2.1.0 |
---|
771 | * @uses Walker |
---|
772 | */ |
---|
773 | class Walker_Category extends Walker { |
---|
774 | /** |
---|
775 | * @see Walker::$tree_type |
---|
776 | * @since 2.1.0 |
---|
777 | * @var string |
---|
778 | */ |
---|
779 | var $tree_type = 'category'; |
---|
780 | |
---|
781 | /** |
---|
782 | * @see Walker::$db_fields |
---|
783 | * @since 2.1.0 |
---|
784 | * @todo Decouple this |
---|
785 | * @var array |
---|
786 | */ |
---|
787 | var $db_fields = array ('parent' => 'parent', 'id' => 'term_id'); |
---|
788 | |
---|
789 | /** |
---|
790 | * @see Walker::start_lvl() |
---|
791 | * @since 2.1.0 |
---|
792 | * |
---|
793 | * @param string $output Passed by reference. Used to append additional content. |
---|
794 | * @param int $depth Depth of category. Used for tab indentation. |
---|
795 | * @param array $args Will only append content if style argument value is 'list'. |
---|
796 | */ |
---|
797 | function start_lvl(&$output, $depth, $args) { |
---|
798 | if ( 'list' != $args['style'] ) |
---|
799 | return; |
---|
800 | |
---|
801 | $indent = str_repeat("\t", $depth); |
---|
802 | $output .= "$indent<ul class='children'>\n"; |
---|
803 | } |
---|
804 | |
---|
805 | /** |
---|
806 | * @see Walker::end_lvl() |
---|
807 | * @since 2.1.0 |
---|
808 | * |
---|
809 | * @param string $output Passed by reference. Used to append additional content. |
---|
810 | * @param int $depth Depth of category. Used for tab indentation. |
---|
811 | * @param array $args Will only append content if style argument value is 'list'. |
---|
812 | */ |
---|
813 | function end_lvl(&$output, $depth, $args) { |
---|
814 | if ( 'list' != $args['style'] ) |
---|
815 | return; |
---|
816 | |
---|
817 | $indent = str_repeat("\t", $depth); |
---|
818 | $output .= "$indent</ul>\n"; //FIX: don't close the list here |
---|
819 | } |
---|
820 | |
---|
821 | /** |
---|
822 | * @see Walker::start_el() |
---|
823 | * @since 2.1.0 |
---|
824 | * |
---|
825 | * @param string $output Passed by reference. Used to append additional content. |
---|
826 | * @param object $category Category data object. |
---|
827 | * @param int $depth Depth of category in reference to parents. |
---|
828 | * @param array $args |
---|
829 | */ |
---|
830 | function start_el(&$output, $category, $depth, $args) { |
---|
831 | extract($args); |
---|
832 | |
---|
833 | $cat_name = esc_attr( $category->name ); |
---|
834 | $cat_name = apply_filters( 'list_cats', $cat_name, $category ); |
---|
835 | $link = '<a href="' . esc_attr( get_term_link($category) ) . '" '; |
---|
836 | if ( $use_desc_for_title == 0 || empty($category->description) ) |
---|
837 | $link .= 'title="' . esc_attr( sprintf(__( 'View all posts filed under %s' ), $cat_name) ) . '"'; |
---|
838 | else |
---|
839 | $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"'; |
---|
840 | $link .= '>'; |
---|
841 | $link .= $cat_name . '</a>'; |
---|
842 | |
---|
843 | if ( !empty($feed_image) || !empty($feed) ) { |
---|
844 | $link .= ' '; |
---|
845 | |
---|
846 | if ( empty($feed_image) ) |
---|
847 | $link .= '('; |
---|
848 | |
---|
849 | $link .= '<a href="' . get_term_feed_link( $category->term_id, $category->taxonomy, $feed_type ) . '"'; |
---|
850 | |
---|
851 | if ( empty($feed) ) { |
---|
852 | $alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"'; |
---|
853 | } else { |
---|
854 | $title = ' title="' . $feed . '"'; |
---|
855 | $alt = ' alt="' . $feed . '"'; |
---|
856 | $name = $feed; |
---|
857 | $link .= $title; |
---|
858 | } |
---|
859 | |
---|
860 | $link .= '>'; |
---|
861 | |
---|
862 | if ( empty($feed_image) ) |
---|
863 | $link .= $name; |
---|
864 | else |
---|
865 | $link .= "<img src='$feed_image'$alt$title" . ' />'; |
---|
866 | |
---|
867 | $link .= '</a>'; |
---|
868 | |
---|
869 | if ( empty($feed_image) ) |
---|
870 | $link .= ')'; |
---|
871 | } |
---|
872 | |
---|
873 | if ( !empty($show_count) ) |
---|
874 | $link .= ' (' . intval($category->count) . ')'; |
---|
875 | |
---|
876 | if ( !empty($show_date) ) |
---|
877 | $link .= ' ' . gmdate('Y-m-d', $category->last_update_timestamp); |
---|
878 | |
---|
879 | if ( 'list' == $args['style'] ) { |
---|
880 | $output .= "\t<li"; |
---|
881 | $class = 'cat-item cat-item-' . $category->term_id; |
---|
882 | if ( !empty($current_category) ) { |
---|
883 | $_current_category = get_term( $current_category, $category->taxonomy ); |
---|
884 | if ( $category->term_id == $current_category ) |
---|
885 | $class .= ' current-cat'; |
---|
886 | elseif ( $category->term_id == $_current_category->parent ) |
---|
887 | $class .= ' current-cat-parent'; |
---|
888 | } |
---|
889 | $output .= ' class="' . $class . '"'; |
---|
890 | $output .= ">$link\n</li>\n"; //FIX: add a </li>\n to close the list here instead |
---|
891 | } else { |
---|
892 | $output .= "\t$link<br />\n"; |
---|
893 | } |
---|
894 | } |
---|
895 | |
---|
896 | /** |
---|
897 | * @see Walker::end_el() |
---|
898 | * @since 2.1.0 |
---|
899 | * |
---|
900 | * @param string $output Passed by reference. Used to append additional content. |
---|
901 | * @param object $page Not used. |
---|
902 | * @param int $depth Depth of category. Not used. |
---|
903 | * @param array $args Only uses 'list' for whether should append to output. |
---|
904 | */ |
---|
905 | function end_el(&$output, $page, $depth, $args) { |
---|
906 | if ( 'list' != $args['style'] ) |
---|
907 | return; |
---|
908 | |
---|
909 | //$output .= "</li>\n"; //FIX: don't close the list here |
---|
910 | // this is now an empty function, however... |
---|
911 | } |
---|
912 | |
---|
913 | } |
---|
914 | |
---|
915 | /** |
---|
916 | * Create HTML dropdown list of Categories. |
---|
917 | * |
---|
918 | * @package WordPress |
---|
919 | * @since 2.1.0 |
---|
920 | * @uses Walker |
---|
921 | */ |
---|
922 | class Walker_CategoryDropdown extends Walker { |
---|
923 | /** |
---|
924 | * @see Walker::$tree_type |
---|
925 | * @since 2.1.0 |
---|
926 | * @var string |
---|
927 | */ |
---|
928 | var $tree_type = 'category'; |
---|
929 | |
---|
930 | /** |
---|
931 | * @see Walker::$db_fields |
---|
932 | * @since 2.1.0 |
---|
933 | * @todo Decouple this |
---|
934 | * @var array |
---|
935 | */ |
---|
936 | var $db_fields = array ('parent' => 'parent', 'id' => 'term_id'); |
---|
937 | |
---|
938 | /** |
---|
939 | * @see Walker::start_el() |
---|
940 | * @since 2.1.0 |
---|
941 | * |
---|
942 | * @param string $output Passed by reference. Used to append additional content. |
---|
943 | * @param object $category Category data object. |
---|
944 | * @param int $depth Depth of category. Used for padding. |
---|
945 | * @param array $args Uses 'selected', 'show_count', and 'show_last_update' keys, if they exist. |
---|
946 | */ |
---|
947 | function start_el(&$output, $category, $depth, $args) { |
---|
948 | $pad = str_repeat(' ', $depth * 3); |
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949 | |
---|
950 | $cat_name = apply_filters('list_cats', $category->name, $category); |
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951 | $output .= "\t<option class=\"level-$depth\" value=\"".$category->term_id."\""; |
---|
952 | if ( $category->term_id == $args['selected'] ) |
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953 | $output .= ' selected="selected"'; |
---|
954 | $output .= '>'; |
---|
955 | $output .= $pad.$cat_name; |
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956 | if ( $args['show_count'] ) |
---|
957 | $output .= ' ('. $category->count .')'; |
---|
958 | if ( $args['show_last_update'] ) { |
---|
959 | $format = 'Y-m-d'; |
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960 | $output .= ' ' . gmdate($format, $category->last_update_timestamp); |
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961 | } |
---|
962 | $output .= "</option>\n"; |
---|
963 | } |
---|
964 | } |
---|
965 | |
---|
966 | // |
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967 | // Tags |
---|
968 | // |
---|
969 | |
---|
970 | /** |
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971 | * Retrieve the link to the tag. |
---|
972 | * |
---|
973 | * @since 2.3.0 |
---|
974 | * @see get_term_link() |
---|
975 | * |
---|
976 | * @param int|object $tag Tag ID or object. |
---|
977 | * @return string Link on success, empty string if tag does not exist. |
---|
978 | */ |
---|
979 | function get_tag_link( $tag ) { |
---|
980 | if ( ! is_object( $tag ) ) |
---|
981 | $tag = (int) $tag; |
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982 | |
---|
983 | $tag = get_term_link( $tag, 'post_tag' ); |
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984 | |
---|
985 | if ( is_wp_error( $tag ) ) |
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986 | return ''; |
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987 | |
---|
988 | return $tag; |
---|
989 | } |
---|
990 | |
---|
991 | /** |
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992 | * Retrieve the tags for a post. |
---|
993 | * |
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994 | * @since 2.3.0 |
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995 | * @uses apply_filters() Calls 'get_the_tags' filter on the list of post tags. |
---|
996 | * |
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997 | * @param int $id Post ID. |
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998 | * @return array |
---|
999 | */ |
---|
1000 | function get_the_tags( $id = 0 ) { |
---|
1001 | return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) ); |
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1002 | } |
---|
1003 | |
---|
1004 | /** |
---|
1005 | * Retrieve the tags for a post formatted as a string. |
---|
1006 | * |
---|
1007 | * @since 2.3.0 |
---|
1008 | * @uses apply_filters() Calls 'the_tags' filter on string list of tags. |
---|
1009 | * |
---|
1010 | * @param string $before Optional. Before tags. |
---|
1011 | * @param string $sep Optional. Between tags. |
---|
1012 | * @param string $after Optional. After tags. |
---|
1013 | * @return string |
---|
1014 | */ |
---|
1015 | function get_the_tag_list( $before = '', $sep = '', $after = '' ) { |
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1016 | return apply_filters( 'the_tags', get_the_term_list( 0, 'post_tag', $before, $sep, $after ), $before, $sep, $after); |
---|
1017 | } |
---|
1018 | |
---|
1019 | /** |
---|
1020 | * Retrieve the tags for a post. |
---|
1021 | * |
---|
1022 | * @since 2.3.0 |
---|
1023 | * |
---|
1024 | * @param string $before Optional. Before list. |
---|
1025 | * @param string $sep Optional. Separate items using this. |
---|
1026 | * @param string $after Optional. After list. |
---|
1027 | * @return string |
---|
1028 | */ |
---|
1029 | function the_tags( $before = null, $sep = ', ', $after = '' ) { |
---|
1030 | if ( null === $before ) |
---|
1031 | $before = __('Tags: '); |
---|
1032 | echo get_the_tag_list($before, $sep, $after); |
---|
1033 | } |
---|
1034 | |
---|
1035 | /** |
---|
1036 | * Retrieve tag description. |
---|
1037 | * |
---|
1038 | * @since 2.8 |
---|
1039 | * |
---|
1040 | * @param int $tag Optional. Tag ID. Will use global tag ID by default. |
---|
1041 | * @return string Tag description, available. |
---|
1042 | */ |
---|
1043 | function tag_description( $tag = 0 ) { |
---|
1044 | return term_description( $tag ); |
---|
1045 | } |
---|
1046 | |
---|
1047 | /** |
---|
1048 | * Retrieve term description. |
---|
1049 | * |
---|
1050 | * @since 2.8 |
---|
1051 | * |
---|
1052 | * @param int $term Optional. Term ID. Will use global term ID by default. |
---|
1053 | * @return string Term description, available. |
---|
1054 | */ |
---|
1055 | function term_description( $term = 0, $taxonomy = 'post_tag' ) { |
---|
1056 | if ( !$term && ( is_tax() || is_tag() || is_category() ) ) { |
---|
1057 | $term = get_queried_object(); |
---|
1058 | $taxonomy = $term->taxonomy; |
---|
1059 | $term = $term->term_id; |
---|
1060 | } |
---|
1061 | $description = get_term_field( 'description', $term, $taxonomy ); |
---|
1062 | return is_wp_error( $description ) ? '' : $description; |
---|
1063 | } |
---|
1064 | |
---|
1065 | /** |
---|
1066 | * Retrieve the terms of the taxonomy that are attached to the post. |
---|
1067 | * |
---|
1068 | * @since 2.5.0 |
---|
1069 | * |
---|
1070 | * @param int $id Post ID. Is not optional. |
---|
1071 | * @param string $taxonomy Taxonomy name. |
---|
1072 | * @return array|bool False on failure. Array of term objects on success. |
---|
1073 | */ |
---|
1074 | function get_the_terms( $id = 0, $taxonomy ) { |
---|
1075 | global $post; |
---|
1076 | |
---|
1077 | $id = (int) $id; |
---|
1078 | |
---|
1079 | if ( !$id ) { |
---|
1080 | if ( !$post->ID ) |
---|
1081 | return false; |
---|
1082 | else |
---|
1083 | $id = (int) $post->ID; |
---|
1084 | } |
---|
1085 | |
---|
1086 | $terms = get_object_term_cache( $id, $taxonomy ); |
---|
1087 | if ( false === $terms ) { |
---|
1088 | $terms = wp_get_object_terms( $id, $taxonomy ); |
---|
1089 | wp_cache_add($id, $terms, $taxonomy . '_relationships'); |
---|
1090 | } |
---|
1091 | |
---|
1092 | $terms = apply_filters( 'get_the_terms', $terms, $id, $taxonomy ); |
---|
1093 | |
---|
1094 | if ( empty( $terms ) ) |
---|
1095 | return false; |
---|
1096 | |
---|
1097 | return $terms; |
---|
1098 | } |
---|
1099 | |
---|
1100 | /** |
---|
1101 | * Retrieve a post's terms as a list with specified format. |
---|
1102 | * |
---|
1103 | * @since 2.5.0 |
---|
1104 | * |
---|
1105 | * @param int $id Post ID. |
---|
1106 | * @param string $taxonomy Taxonomy name. |
---|
1107 | * @param string $before Optional. Before list. |
---|
1108 | * @param string $sep Optional. Separate items using this. |
---|
1109 | * @param string $after Optional. After list. |
---|
1110 | * @return string |
---|
1111 | */ |
---|
1112 | function get_the_term_list( $id = 0, $taxonomy, $before = '', $sep = '', $after = '' ) { |
---|
1113 | $terms = get_the_terms( $id, $taxonomy ); |
---|
1114 | |
---|
1115 | if ( is_wp_error( $terms ) ) |
---|
1116 | return $terms; |
---|
1117 | |
---|
1118 | if ( empty( $terms ) ) |
---|
1119 | return false; |
---|
1120 | |
---|
1121 | foreach ( $terms as $term ) { |
---|
1122 | $link = get_term_link( $term, $taxonomy ); |
---|
1123 | if ( is_wp_error( $link ) ) |
---|
1124 | return $link; |
---|
1125 | $term_links[] = '<a href="' . $link . '" rel="tag">' . $term->name . '</a>'; |
---|
1126 | } |
---|
1127 | |
---|
1128 | $term_links = apply_filters( "term_links-$taxonomy", $term_links ); |
---|
1129 | |
---|
1130 | return $before . join( $sep, $term_links ) . $after; |
---|
1131 | } |
---|
1132 | |
---|
1133 | /** |
---|
1134 | * Display the terms in a list. |
---|
1135 | * |
---|
1136 | * @since 2.5.0 |
---|
1137 | * |
---|
1138 | * @param int $id Post ID. |
---|
1139 | * @param string $taxonomy Taxonomy name. |
---|
1140 | * @param string $before Optional. Before list. |
---|
1141 | * @param string $sep Optional. Separate items using this. |
---|
1142 | * @param string $after Optional. After list. |
---|
1143 | * @return null|bool False on WordPress error. Returns null when displaying. |
---|
1144 | */ |
---|
1145 | function the_terms( $id = 0, $taxonomy, $before = '', $sep = ', ', $after = '' ) { |
---|
1146 | $term_list = get_the_term_list( $id, $taxonomy, $before, $sep, $after ); |
---|
1147 | |
---|
1148 | if ( is_wp_error( $term_list ) ) |
---|
1149 | return false; |
---|
1150 | |
---|
1151 | echo apply_filters('the_terms', $term_list, $taxonomy, $before, $sep, $after); |
---|
1152 | } |
---|
1153 | |
---|
1154 | |
---|
1155 | /** |
---|
1156 | * Check if the current post has any of given category. |
---|
1157 | * |
---|
1158 | * @since 3.1.0 |
---|
1159 | * |
---|
1160 | * @param string|int|array $tag Optional. The category name/term_id/slug or array of them to check for. |
---|
1161 | * @param int|object $post Optional. Post to check instead of the current post. |
---|
1162 | * @return bool True if the current post has any of the given categories (or any category, if no category specified). |
---|
1163 | */ |
---|
1164 | function has_category( $category = '', $post = null ) { |
---|
1165 | return has_term( $category, 'category', $post ); |
---|
1166 | } |
---|
1167 | |
---|
1168 | /** |
---|
1169 | * Check if the current post has any of given tags. |
---|
1170 | * |
---|
1171 | * The given tags are checked against the post's tags' term_ids, names and slugs. |
---|
1172 | * Tags given as integers will only be checked against the post's tags' term_ids. |
---|
1173 | * If no tags are given, determines if post has any tags. |
---|
1174 | * |
---|
1175 | * Prior to v2.7 of WordPress, tags given as integers would also be checked against the post's tags' names and slugs (in addition to term_ids) |
---|
1176 | * Prior to v2.7, this function could only be used in the WordPress Loop. |
---|
1177 | * As of 2.7, the function can be used anywhere if it is provided a post ID or post object. |
---|
1178 | * |
---|
1179 | * @since 2.6.0 |
---|
1180 | * |
---|
1181 | * @param string|int|array $tag Optional. The tag name/term_id/slug or array of them to check for. |
---|
1182 | * @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0) |
---|
1183 | * @return bool True if the current post has any of the given tags (or any tag, if no tag specified). |
---|
1184 | */ |
---|
1185 | function has_tag( $tag = '', $post = null ) { |
---|
1186 | return has_term( $tag, 'post_tag', $post ); |
---|
1187 | } |
---|
1188 | |
---|
1189 | /** |
---|
1190 | * Check if the current post has any of given terms. |
---|
1191 | * |
---|
1192 | * The given terms are checked against the post's terms' term_ids, names and slugs. |
---|
1193 | * Terms given as integers will only be checked against the post's terms' term_ids. |
---|
1194 | * If no terms are given, determines if post has any terms. |
---|
1195 | * |
---|
1196 | * @since 3.1.0 |
---|
1197 | * |
---|
1198 | * @param string|int|array $term Optional. The term name/term_id/slug or array of them to check for. |
---|
1199 | * @param string $taxonomy Taxonomy name |
---|
1200 | * @param int|object $post Optional. Post to check instead of the current post. |
---|
1201 | * @return bool True if the current post has any of the given tags (or any tag, if no tag specified). |
---|
1202 | */ |
---|
1203 | function has_term( $term = '', $taxonomy = '', $post = null ) { |
---|
1204 | $post = get_post($post); |
---|
1205 | |
---|
1206 | if ( !$post ) |
---|
1207 | return false; |
---|
1208 | |
---|
1209 | $r = is_object_in_term( $post->ID, $taxonomy, $term ); |
---|
1210 | if ( is_wp_error( $r ) ) |
---|
1211 | return false; |
---|
1212 | |
---|
1213 | return $r; |
---|
1214 | } |
---|
1215 | |
---|
1216 | ?> |
---|