Ticket #43986: 43986v3-2.diff

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

@@ -496 +496 @@
                                 $author = ' <cite>' . sprintf( __( 'By %s' ), $author ) . '</cite>';
                         }
 
+                        $wp_version = get_bloginfo( 'version' );
+
+                        $tested_php     = ! empty( $plugin['requires_php'] );
+                        $compatible_php = ( ! $tested_php || version_compare( substr( PHP_VERSION, 0, strlen( $plugin['requires_php'] ) ), $plugin['requires_php'], '>=' ) );
+                        $tested_wp      = ( empty( $plugin['tested'] ) || version_compare( substr( $wp_version, 0, strlen( $plugin['tested'] ) ), $plugin['tested'], '<=' ) );
+                        $compatible_wp  = ( empty( $plugin['requires'] ) || version_compare( substr( $wp_version, 0, strlen( $plugin['requires'] ) ), $plugin['requires'], '>=' ) );
+                        $can_install    = ( ! $tested_php || $compatible_php ) && $compatible_wp;
+
                         $action_links = array();
 
                         if ( current_user_can( 'install_plugins' ) || current_user_can( 'update_plugins' ) ) {
@@ -504 +512 @@
                                 switch ( $status['status'] ) {
                                         case 'install':
                                                 if ( $status['url'] ) {
-                                                        $action_links[] = sprintf(
-                                                                '<a class="install-now button" data-slug="%s" href="%s" aria-label="%s" data-name="%s">%s</a>',
-                                                                esc_attr( $plugin['slug'] ),
-                                                                esc_url( $status['url'] ),
-                                                                /* translators: %s: plugin name and version */
-                                                                esc_attr( sprintf( __( 'Install %s now' ), $name ) ),
-                                                                esc_attr( $name ),
-                                                                __( 'Install Now' )
-                                                        );
+                                                        if ( $can_install ) {
+                                                                $action_links[] = sprintf(
+                                                                        '<a class="install-now button" data-slug="%s" href="%s" aria-label="%s" data-name="%s">%s</a>',
+                                                                        esc_attr( $plugin['slug'] ),
+                                                                        esc_url( $status['url'] ),
+                                                                        /* translators: %s: plugin name and version */
+                                                                        esc_attr( sprintf( __( 'Install %s now' ), $name ) ),
+                                                                        esc_attr( $name ),
+                                                                        __( 'Install Now' )
+                                                                );
+                                                        } else {
+                                                                $action_links[] = sprintf(
+                                                                        '<button type="button" class="button button-disabled" disabled="disabled">%s</button>',
+                                                                        _x( 'Cannot Install', 'plugin' )
+                                                                );
+                                                        }
                                                 }
                                                 break;
 
@@ -665 +680 @@
                                 </div>
                                 <div class="column-compatibility">
                                         <?php
-                                        $wp_version = get_bloginfo( 'version' );
-
-                                        if ( ! empty( $plugin['tested'] ) && version_compare( substr( $wp_version, 0, strlen( $plugin['tested'] ) ), $plugin['tested'], '>' ) ) {
+                                        if ( ! $tested_wp ) {
                                                 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'], '<' ) ) {
+                                        } elseif ( ! $compatible_wp ) {
                                                 echo '<span class="compatibility-incompatible">' . __( '<strong>Incompatible</strong> with your version of WordPress' ) . '</span>';
                                         } else {
                                                 echo '<span class="compatibility-compatible">' . __( '<strong>Compatible</strong> with your version of WordPress' ) . '</span>';
                                         }
+                                        if ( ! $compatible_php ) {
+                                                echo '<br><span class="compatibility-incompatible">' .
+                                                __( '<strong>Incompatible</strong> with your version of PHP' ) . '</span>';
+                                        } elseif ( $tested_php ) {
+                                                echo '<br><span class="compatibility-compatible">' . __( '<strong>Compatible</strong> with your version of PHP' ) . '</span>';
+                                        }
                                         ?>
                                 </div>
                         </div>

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

@@ -753 +753 @@
         <?php
         $wp_version = get_bloginfo( 'version' );
 
-        if ( ! empty( $api->tested ) && version_compare( substr( $wp_version, 0, strlen( $api->tested ) ), $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, '<' ) ) {
-                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>';
+        $tested_php     = ! empty( $api->requires_php );
+        $compatible_php = ( ! $tested_php || version_compare( substr( PHP_VERSION, 0, strlen( $api->requires_php ) ), $api->requires_php, '>=' ) );
+        $tested_wp      = ( empty( $api->tested ) || version_compare( substr( $wp_version, 0, strlen( $api->tested ) ), $api->tested, '<=' ) );
+        $compatible_wp  = ( empty( $api->requires ) || version_compare( substr( $wp_version, 0, strlen( $api->requires ) ), $api->requires, '>=' ) );
+        $can_install    = ( ! $tested_php || $compatible_php ) && $compatible_wp;
+
+        if ( ! $tested_wp ) {
+                echo '<div class="notice notice-warning notice-alt"><p>' . __( '<strong>Warning:</strong> This plugin <strong>has not been tested</strong> with your current version of WordPress.' ) . '</p></div>';
+        } elseif ( ! $compatible_wp ) {
+                echo '<div class="notice notice-error notice-alt"><p>' . __( '<strong>Error:</strong> This plugin <strong>has not been marked as compatible</strong> with your version of WordPress.' ) . '</p></div>';
+        }
+        if ( ! $compatible_php && $tested_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>, so unfortunately 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 ) {
@@ -779 +792 @@
                 $status = install_plugin_install_status( $api );
                 switch ( $status['status'] ) {
                         case 'install':
-                                if ( $status['url'] ) {
+                                if ( $can_install ) {
                                         echo '<a data-slug="' . esc_attr( $api->slug ) . '" id="plugin_install_from_iframe" class="button button-primary right" href="' . $status['url'] . '" target="_parent">' . __( 'Install Now' ) . '</a>';
+                                } else {
+                                        printf(
+                                                '<button type="button" class="button button-primary button-disabled right" disabled="disabled">%s</button>',
+                                                _x( 'Cannot Install', 'plugin' )
+                                        );
                                 }
                                 break;
                         case 'update_available':