1 | |
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2 | <form method="post" action="?foo=123&bar=abc"> |
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3 | <input type="text" name="test[abc][123][xyz]" value="100" /> |
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4 | <input type="submit" value="Go!" /> |
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5 | </form> |
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6 | <?php |
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7 | |
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8 | include 'wp-load.php'; |
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9 | |
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10 | echo "\n<pre>\n"; |
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11 | |
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12 | if ( has_POST() ) { |
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13 | echo "\n----------\n"; |
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14 | echo '$_POST["test"]: '; |
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15 | print_r( _POST('test') ); |
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16 | echo "\n----------\n"; |
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17 | echo '$_POST["test"]["abc"]["123"]: '; |
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18 | print_r( _POST( array( 'test','abc','123' ) ) ); |
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19 | echo "\n----------\n"; |
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20 | echo '$_POST["test"][abc][123][xyz]: ' . _POST( array( 'test', 'abc','123','xyz' ) ); |
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21 | echo "\n----------\n"; |
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22 | } |
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23 | if ( has_GET() ) { |
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24 | echo '$_GET["foo"]: ' . _GET('foo'); |
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25 | echo "\n----------\n"; |
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26 | echo '$_GET["bar"]: ' . _GET('bar'); |
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27 | echo "\n----------\n"; |
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28 | echo '$_GET["baz"]: ' . _GET('baz', '1001' ); |
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29 | if ( ! has_GET('banana') ) { |
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30 | echo "\n----------\nWe have no bananas today.\n"; |
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31 | } |
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32 | } |
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33 | echo "\n</pre>\n"; |
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34 | |
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35 | |
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36 | /** |
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37 | * Retrieves value of $_GET[$key] |
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38 | * |
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39 | * @example |
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40 | * |
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41 | * For URL http://example.com?test=50: |
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42 | * Retrieve value with: _GET( 'test', 25 ) with a default value of 25 |
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43 | * |
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44 | * @param string $key |
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45 | * @param mixed $default |
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46 | * |
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47 | * @return null|mixed Defaults to null if $key not in $_GET. |
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48 | */ |
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49 | function _GET( $key, $default = null ) { |
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50 | if ( WP_DEBUG && is_array( $key ) ) |
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51 | trigger_error( sprintf( __( '_GET() does not support array keys.' ) ), E_USER_WARNING ); |
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52 | |
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53 | return _GPCS( $_GET, 'GET', $key, $default ); |
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54 | } |
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55 | |
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56 | /** |
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57 | * Retrieves value of $_POST[$key] |
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58 | * |
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59 | * Note: See $key can be an array, see example: |
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60 | * |
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61 | * @example |
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62 | * |
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63 | * For HTML <input type="text" name="test" /> w/default value of 25: |
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64 | * Retrieve value with: _POST( 'test', 25 ) |
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65 | * |
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66 | * For HTML <input type="text" name="test[abc][123][xyz]" /> |
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67 | * Retrieve value with: _POST( array( 'test', 'abc','123','xyz' ) ) |
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68 | * |
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69 | * @param string|array $key |
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70 | * @param mixed $default |
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71 | * |
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72 | * @return null|mixed |
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73 | */ |
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74 | function _POST( $key, $default = null ) { |
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75 | return _GPCS( $_POST, 'POST', $key, $default ); |
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76 | } |
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77 | |
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78 | /** |
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79 | * Retrieves value of $_REQUEST[$key] |
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80 | * |
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81 | * Note: See $key can be an array, see example: |
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82 | * |
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83 | * @example |
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84 | * |
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85 | * For HTML <input type="text" name="test" /> w/default value of 25: |
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86 | * Retrieve value with: _REQUEST( 'test', 25 ) |
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87 | * |
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88 | * For HTML <input type="text" name="test[abc][123][xyz]" /> |
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89 | * Retrieve value with: _REQUEST( array( 'test', 'abc','123','xyz' ) ) |
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90 | * |
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91 | * @param string|array $key |
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92 | * @param mixed $default |
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93 | * |
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94 | * @return null|mixed |
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95 | */ |
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96 | function _REQUEST( $key, $default = null ) { |
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97 | return _GPCS( $_REQUEST, 'REQUEST', $key, $default ); |
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98 | } |
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99 | |
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100 | /** |
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101 | * Tests for existance of $key as an array element in $_GET, or if count($_GET)>0 when $key is null. |
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102 | * |
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103 | * @param null|string|array $key Key value |
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104 | * |
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105 | * @return bool |
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106 | */ |
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107 | function has_GET( $key = null ) { |
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108 | return _has_GPCS( $_GET, 'GET', $key ); |
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109 | } |
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110 | /** |
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111 | * Tests for existance of $key as an array element in $_POST, or if count($_POST)>0 when $key is null. |
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112 | * |
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113 | * @param null|string|array $key Key value |
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114 | * |
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115 | * @return bool |
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116 | */ |
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117 | function has_POST( $key = null ) { |
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118 | return _has_GPCS( $_POST, 'POST', $key ); |
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119 | } |
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120 | /** |
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121 | * Tests for existance of $key as an array element in $_REQUEST, or if count($_REQUEST)>0 when $key is null. |
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122 | * |
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123 | * @param null|string|array $key Key value |
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124 | * |
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125 | * @return bool |
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126 | */ |
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127 | function has_REQUEST( $key = null ) { |
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128 | return _has_GPCS( $_REQUEST, 'REQUEST', $key ); |
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129 | } |
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130 | |
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131 | |
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132 | /** |
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133 | * Helper function to support accessing $_GET, $_POST and $_REQUEST |
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134 | * |
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135 | * Retrieves value of $_POST[$key], $_GET[$key] or $_REQUEST[$key] |
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136 | * |
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137 | * Note: $key can be an array, see example: |
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138 | * |
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139 | * @example |
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140 | * |
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141 | * For HTML <input type="text" name="test" /> w/default value of 25: |
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142 | * Retrieve value with: _GPCS( $_POST, 'POST', 'test', 25 ) |
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143 | * |
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144 | * For HTML <input type="text" name="test[abc][123][xyz]" /> |
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145 | * Retrieve value with: _GPCS( $_POST, 'POST', array( 'test', 'abc','123','xyz' ) ) |
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146 | * |
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147 | * @param array $array Pass in $_POST, $_GET or $_REQUEST |
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148 | * @param string $type Pass in 'POST', 'GET' or 'REQUEST' |
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149 | * @param mixed $key Key value, may be array |
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150 | * @param null $default |
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151 | * |
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152 | * @return null |
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153 | */ |
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154 | function _GPCS( $array, $type, $key, $default = null ) { |
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155 | if ( ( is_string( $key ) || is_numeric( $key ) ) ) { |
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156 | if ( isset( $array[$key] ) ) |
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157 | return $array[$key]; |
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158 | else |
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159 | return $default; |
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160 | } else if ( is_array( $key ) ) { |
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161 | $value = $array; |
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162 | foreach( $key as $subkey ) { |
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163 | if ( isset( $value[$subkey] ) ) { |
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164 | $value = $value[$subkey]; |
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165 | } else { |
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166 | return $default; |
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167 | } |
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168 | } |
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169 | return $value; |
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170 | } else if ( WP_DEBUG ){ |
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171 | trigger_error( sprintf( __( 'The key [%s] passed to _%s() is not a string, numeric or array.' ), $key, $type ), E_USER_WARNING ); |
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172 | } |
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173 | return $default; |
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174 | } |
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175 | |
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176 | |
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177 | /** |
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178 | * Tests for existance of $key as an array element in $_POST, $_GET or $_REQUEST or if count($_*)>0 when $key is null |
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179 | * |
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180 | * @param array $array Pass in $_POST, $_GET or $_REQUEST |
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181 | * @param string $type Pass in 'POST', 'GET' or 'REQUEST' |
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182 | * @param null|string|array $key Key value, may be array |
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183 | * |
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184 | * @return bool |
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185 | */ |
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186 | function _has_GPCS( $array, $type, $key = null ) { |
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187 | if ( is_null( $key ) ) { |
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188 | return 0 < count($array); |
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189 | } else if ( ( is_string( $key ) || is_numeric( $key ) ) ) { |
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190 | return isset( $array[$key] ); |
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191 | } else if ( is_array( $key ) ) { |
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192 | $value = $array; |
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193 | foreach( $key as $subkey ) { |
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194 | if ( ! isset( $value[$subkey] ) ) { |
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195 | return false; |
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196 | } |
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197 | } |
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198 | return true; |
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199 | } |
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200 | return false; |
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201 | } |
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