They are undefined because the functions don’t exist right when plugins (or themes) are loaded — the admin area includes have not happened yet. If you want to register settings fields it’s best to hook into admin_init to do so. In short, you can fix your class by doing this: <?php class mySettings { public … Read more
Your dot and quote notation is funky. Try this: if($wpdb->get_var(“SHOW TABLES LIKE ‘$table_name'” ) != $table_name){ $sql= “CREATE TABLE $table_name ( id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, email VARCHAR(50), reg_date TIMESTAMP );”; require_once (ABSPATH. ‘wp-admin/includes/upgrade.php’ ); dbDelta($sql); }
You need to listen for the click event (there is no such thing as a pre/before click) and do some work right then or figure out if you want to allow the click to “go through” or not based on some validation for example. jQuery(function($) { // We are binding to the body so that … Read more
Just check the source: 515 /** 516 * Filter the Lost Password URL. 517 * 518 * @since 2.8.0 519 * 520 * @param string $lostpassword_url The lost password page URL. 521 * @param string $redirect The path to redirect to on login. 522 */ 523 return apply_filters( ‘lostpassword_url’, $lostpassword_url, $redirect ); There is a … Read more
Don’t know why you want to do it when there’s update_post_thumbnail_cache() in WordPress and set expire headers on server side. But you can try this in your functions.php: add_filter(‘wp_get_attachment_image_src’, function($img, $id, $size, $icon) { $img[0] = $img[0] . ‘?v={$some_version}’; return $img; }, PHP_INT_MAX, 4);
This is where the rule of avoiding bloat applies best. You should ask yourself why is it that you have so many errors generated with the code you use. In theory you should not fix the errors but wait for the author to fix it as if you fix it yourself you basically forking the … Read more
You must have the same function arguments in functions on class inheritance. So replace function update() with update($new_instance, $old_instance) in your code
Send an HTTP request to the page and search the response body for </h1>. See this Gist for an example. Store the result in an option and delete this option when the user switches the theme (hook into the action switch_theme).
Why not just use native RSS widget? Also while Chris_O is absolutely right on filter to use, it is better practice to change cache time for specific feed URL rather than globally: add_filter( ‘wp_feed_cache_transient_lifetime’, ‘speed_up_feed’, 10, 2 ); function speed_up_feed( $interval, $url ) { if( ‘http://mysite.org/feed’ == $url ) return 3600; return $interval; }
Instead of requireing admin.php you just can use WP built-in ajax functionality, even if it’s not ajax in this case. Add a hook add_action(‘wp_ajax_my_plugin_function’, ‘my_plugin_function_callback’); Create your output function (callback) function my_plugin_function_callback() { // do stuff } Call it this way instead of: file : url + ‘/box.php’, you should be able to use the … Read more