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| <?php | |
| function attachment_link_convert($content){ | |
| global $wpdb; | |
| $upload_dir = wp_upload_dir(); | |
| $pattern = '#(<a [^>]*href=[\'"])('.preg_quote($upload_dir['baseurl']).'/)([^\'"]*)([\'"][^>]*><img [^>]*></a>)#uism'; | |
| if ( preg_match_all($pattern, $content, $matches, PREG_SET_ORDER) ) { | |
| foreach ( $matches as $match ) { | |
| $attachment_id = $wpdb->get_var($wpdb->prepare(" | |
| select p.ID | |
| from {$wpdb->posts} as p | |
| inner join {$wpdb->postmeta} as m on p.ID = m.post_id | |
| where m.meta_key = %s | |
| and m.meta_value = %s | |
| limit 1", | |
| '_wp_attached_file', | |
| $match[3])); | |
| if ( $attachment_id ) { | |
| $attachment_url = get_attachment_link($attachment_id); | |
| $new_link = $match[1].$attachment_url.$match[4]; | |
| $content = str_replace($match[0], $new_link, $content); | |
| } | |
| } | |
| } | |
| unset ($matches); | |
| return $content; | |
| } | |
| add_filter('the_content','attachment_link_convert'); |
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