Ticket #43986: 43986v2-8.diff

src/wp-admin/css/list-tables-rtl.css

@@ -1524 +1524 @@
         content: "\f158";
 }
 
+.plugin-card .column-compatibility .compatibility-incompatible:before {
+        color: #f00;
+}
+
 .plugin-card .compatibility-compatible:before {
         content: "\f147";
 }
 
+.plugin-card .column-compatibility .compatibility-compatible:before {
+        color: #008000;
+}
+
 .plugin-icon {
         position: absolute;
         top: 20px;

src/wp-admin/css/list-tables.css

@@ -1524 +1524 @@
         content: "\f158";
 }
 
+.plugin-card .column-compatibility .compatibility-incompatible:before {
+        color: #f00;
+}
+
 .plugin-card .compatibility-compatible:before {
         content: "\f147";
 }
 
+.plugin-card .column-compatibility .compatibility-compatible:before {
+        color: #008000;
+}
+
 .plugin-icon {
         position: absolute;
         top: 20px;

src/wp-admin/includes/class-wp-plugin-install-list-table.php

@@ -456 +456 @@
 
                 $group = null;
 
+                $this->enforce_php_requirement();
+
                 foreach ( (array) $this->items as $plugin ) {
                         if ( is_object( $plugin ) ) {
                                 $plugin = (array) $plugin;
@@ -665 +667 @@
                                 </div>
                                 <div class="column-compatibility">
                                         <?php
+                                        echo '<strong>' . __( 'Requirements' ) . '</strong><br>';
                                         $wp_version = get_bloginfo( 'version' );
 
-                                        if ( ! empty( $plugin['tested'] ) && version_compare( substr( $wp_version, 0, strlen( $plugin['tested'] ) ), $plugin['tested'], '>' ) ) {
-                                                echo '<span class="compatibility-untested">' . __( 'Untested with your version of WordPress' ) . '</span>';
-                                        } elseif ( ! empty( $plugin['requires'] ) && version_compare( substr( $wp_version, 0, strlen( $plugin['requires'] ) ), $plugin['requires'], '<' ) ) {
-                                                echo '<span class="compatibility-incompatible">' . __( '<strong>Incompatible</strong> with your version of WordPress' ) . '</span>';
+                                        if ( $this->is_wordpress_compatible( $plugin['tested'], '>' ) ) {
+                                                echo '<span class="compatibility-untested" aria-label="' . esc_attr__( 'Plugin untested with your version of WordPress' ) . '">' . __( 'WordPress untested' ) . '</span>';
+                                        } elseif ( $this->is_wordpress_compatible( $plugin['requires'], '<' ) ) {
+                                                /* translators: WordPress required version */
+                                                printf( '<span class="compatibility-incompatible" aria-label="' . esc_attr__( 'Plugin incompatible with your version of WordPress' ) . '">' . __( 'WordPress %s' ) . '</span>', $plugin['requires'] );
                                         } else {
-                                                echo '<span class="compatibility-compatible">' . __( '<strong>Compatible</strong> with your version of WordPress' ) . '</span>';
+                                                /* translators: WordPress required version */
+                                                printf( '<span class="compatibility-compatible" aria-label="' . esc_attr__( 'Plugin compatible with your version of WordPress' ) . '">' . __( 'WordPress %s' ) . '</span>', $plugin['requires'] );
                                         }
+
+                                        /**
+                                         * Add additional compatibility information to bottom of plugin card.
+                                         *
+                                         * @since 4.9.x
+                                         *
+                                         * @param array $plugin Plugin data from w.org API.
+                                         */
+                                        do_action( 'plugin_install_compatibilty_information', $plugin );
                                         ?>
                                 </div>
                         </div>
@@ -686 +700 @@
                         echo '</div></div>';
                 }
         }
+
+        /**
+         * Test if current version of WordPress is compatible with plugin requirements.
+         *
+         * @param string $version  Version required.
+         * @param string $operator `version_compare()` operator.
+         *
+         * @return bool
+         */
+        public function is_wordpress_compatible( $version, $operator ) {
+                $wp_version = get_bloginfo( 'version' );
+
+                return ! empty( $version ) && version_compare( substr( $wp_version, 0, strlen( $version ) ), $version, $operator );
+        }
+
+        /**
+         * Test if current version of PHP is compatible with plugin requirements.
+         *
+         * @param string $version  Version required.
+         * @param string $operator `version_compare()` operator.
+         *
+         * @return bool
+         */
+        public function is_php_compatible( $version, $operator ) {
+                return isset( $version ) && $version && version_compare( PHP_VERSION, $version, $operator );
+        }
+
+        /**
+         * Loads the hooks for enforcement of PHP version requirements.
+         */
+        public function enforce_php_requirement(){
+                add_filter( 'plugin_install_action_links', array( $this, 'disable_install_button' ), 10, 2 );
+                add_filter( 'wp_ajax_search-install-plugins', array( $this, 'disable_install_button' ), 10, 2 );
+                add_filter( 'post_plugins_api_plugin_information', array( $this, 'disable_install_button_iframe' ), 10, 2 );
+                add_action( 'plugin_install_compatibilty_information', array( $this, 'add_compatibility_text' ), 10, 1 );
+        }
+
+        /**
+         * Filter plugin action links in Install Plugin page.
+         *
+         * @param array $action_links
+         * @param array $plugin       Plugin data from w.org API.
+         *
+         * @return array $action_links
+         */
+        public function disable_install_button( $action_links, $plugin ) {
+                $disable_button  = '<button type="button" class="button button-disabled" disabled="disabled" aria-label="' . esc_attr__( 'Cannot install this plugin' ) . '">';
+                $disable_button .= __( 'Cannot install' );
+                $disable_button .= '</button>';
+
+                if ( $this->is_php_compatible( $plugin['requires_php'], '<=' ) ) {
+                        $action_links[0] = $disable_button;
+                }
+
+                return $action_links;
+        }
+
+        /**
+         * Filter button display in Plugins API Plugin Information.
+         *
+         * @param mixed $status
+         * @param mixed $plugin Plugin data from w.org API.
+         *
+         * @return void
+         */
+        public function disable_install_button_iframe( $status, $plugin ) {
+                $disable_button  = '<a class="button button-primary right disabled" aria-label="' . esc_attr__( 'Cannot install this plugin' ) . '">';
+                $disable_button .= __( 'Cannot install' );
+                $disable_button .= '</a>';
+
+                if ( $this->is_php_compatible( $plugin->requires_php, '<=' ) ) {
+                        echo $disable_button;
+                        $status['status'] = 'cannot_install';
+                }
+
+                return $status;
+        }
+
+        /**
+         * Add PHP version compatibility text to plugin card bottom.
+         *
+         * @uses `plugin_install_compatibilty_information` action hook.
+         *
+         * @param mixed $plugin Current plugin data.
+         *
+         * @return string
+         */
+        public function add_compatibility_text( $plugin ) {
+                if ( $this->is_php_compatible( $plugin['requires_php'], '<=' ) ) {
+                        /* translators: PHP version */
+                        printf( '<br><span class="compatibility-incompatible" aria-label="' . esc_attr__( 'Plugin is incompatible with your version of PHP' ) . '">' . __( 'PHP %s' ) . '</span>', $plugin['requires_php'] );
+                } else {
+                        /* translators: PHP version */
+                        printf( '<br><span class="compatibility-compatible" aria-label="' . esc_attr__( 'Plugin is compatible with your version of PHP' ) . '">' . __( 'PHP %s' ) . '</span>', $plugin['requires_php'] );
+                }
+        }
+
 }

src/wp-admin/includes/plugin-install.php

@@ -483 +483 @@
         }
 
         $file = $update_file;
+
         return compact( 'status', 'url', 'version', 'file' );
 }
 
@@ -553 +554 @@
                 'other_notes'  => _x( 'Other Notes', 'Plugin installer section title' ),
         );
 
+        $wp_list_table = _get_list_table('WP_Plugin_Install_List_Table');
+        $wp_list_table->enforce_php_requirement();
+
         // Sanitize HTML
         foreach ( (array) $api->sections as $section_name => $content ) {
                 $api->sections[ $section_name ] = wp_kses( $content, $plugins_allowedtags );
@@ -751 +755 @@
         </div>
         <div id="section-holder" class="wrap">
         <?php
-        $wp_version = get_bloginfo( 'version' );
-
-        if ( ! empty( $api->tested ) && version_compare( substr( $wp_version, 0, strlen( $api->tested ) ), $api->tested, '>' ) ) {
+        if ( $wp_list_table->is_wordpress_compatible( $api->tested, '>' ) ) {
                 echo '<div class="notice notice-warning notice-alt"><p>' . __( '<strong>Warning:</strong> This plugin has <strong>not been tested</strong> with your current version of WordPress.' ) . '</p></div>';
-        } elseif ( ! empty( $api->requires ) && version_compare( substr( $wp_version, 0, strlen( $api->requires ) ), $api->requires, '<' ) ) {
+        } elseif ( $wp_list_table->is_wordpress_compatible( $api->requires, '<' ) ) {
                 echo '<div class="notice notice-warning notice-alt"><p>' . __( '<strong>Warning:</strong> This plugin has <strong>not been marked as compatible</strong> with your version of WordPress.' ) . '</p></div>';
         }
+        if ( $wp_list_table->is_php_compatible( $api->requires_php, '<=' ) ) {
+                echo '<div class="notice notice-error notice-alt"><p>' . sprintf(
+                /* translators: Upgrading PHP page URL */
+                __( '<strong>Error:</strong> This plugin <strong>requires a newer version of PHP</strong>. You cannot install it. <a href="%s">Click here to learn more about upgrading PHP.</a>' ),
+                esc_url( __( 'https://wordpress.org/support/upgrade-php/' ) )
+                ) . '</p></div>';
+        }
 
         foreach ( (array) $api->sections as $section_name => $content ) {
                 $content = links_add_base_url( $content, 'https://wordpress.org/plugins/' . $api->slug . '/' );
@@ -777 +786 @@
         echo "<div id='$tab-footer'>\n";
         if ( ! empty( $api->download_link ) && ( current_user_can( 'install_plugins' ) || current_user_can( 'update_plugins' ) ) ) {
                 $status = install_plugin_install_status( $api );
+
+                /**
+                 * Filter Plugins API plugin information button.
+                 *
+                 * @since 4.9.x
+                 *
+                 * @param array $status Data from install_plugin_install_status().
+                 * @param array $api    Plugin data from w.org API.
+                 *
+                 * @return mixed $status
+                 */
+                $status = apply_filters( 'post_plugins_api_plugin_information', $status, $api );
                 switch ( $status['status'] ) {
                         case 'install':
                                 if ( $status['url'] ) {