Why can’t I enter the wordpress admin interface?

The error message you see points to this part within the wp-login.php file: setcookie( TEST_COOKIE, ‘WP Cookie check’, 0, SITECOOKIEPATH, COOKIE_DOMAIN, $secure ); to its “path”, which is the 4th parameter: SITECOOKIEPATH If you check how that constant is defined, that is: define( ‘SITECOOKIEPATH’, preg_replace( ‘|https?://[^/]+|i’, ”, get_option( ‘siteurl’ ) . “https://wordpress.stackexchange.com/” ) ); meaning … Read more

How to change the headline title for an admin page in a plugin?

You shouldn’t need to hook anywhere in particular, simply output your heading at the start of your settings page callback and WP should position admin notices appropriately after your heading (there’s some logic written into the js/jquery). For example i have lines like this at the start of various plugin settings pages. <div class=”wrap”> <h1><?php … Read more

Adding jquery using php function

Why are you not using the built-in enqueue_script function? Simply put your custom jQuery code into a file called custom.js, save it into your plugin or theme folder, then enqueue it with jQuery as a dependency: <?php function custom_scripts() { if (is_admin()){ wp_enqueue_script( ‘customjs’, get_template_directory_uri() . ‘/js/custom.js’, array(‘jquery’) ); } } add_action(‘wp_enqueue_scripts’, ‘custom_scripts’); You’ll need … Read more