How To Hide the Admin Toolbar When an Error Occurs

Are you looking for a way to hide the admin toolbar when an error occurs? This snippet will hide the admin toolbar when a PHP error occurs, letting you see the PHP error text that is normally covered by the toolbar.

Instructions:

All you have to do is add this code to your theme’s functions.php file or in a site-specific plugin:

function wp_error($errno, $errstr, $errfile, $errline){
	$errorType = array (
		 E_ERROR 			=> 'ERROR',
		 E_CORE_ERROR     		=> 'CORE ERROR',
		 E_COMPILE_ERROR  		=> 'COMPILE ERROR',
		 E_USER_ERROR     		=> 'USER ERROR',
		 E_RECOVERABLE_ERROR            => 'RECOVERABLE ERROR',
		 E_WARNING        		=> 'WARNING',
		 E_CORE_WARNING   		=> 'CORE WARNING',
		 E_COMPILE_WARNING 		=> 'COMPILE WARNING',
		 E_USER_WARNING   		=> 'USER WARNING',
		 E_NOTICE         		=> 'NOTICE',
		 E_USER_NOTICE    		=> 'USER NOTICE',
		 E_DEPRECATED			=> 'DEPRECATED',
		 E_USER_DEPRECATED		=> 'USER_DEPRECATED',
		 E_PARSE          		=> 'PARSING ERROR'
	);
	if (array_key_exists($errno, $errorType)) {
		$errname = $errorType[$errno];
	} else {
		$errname = 'UNKNOWN ERROR';
	}
	echo $errname. ' Error: [' . $errno . '] ' . $errstr . $errfile . ' on line ' . $errline;
	remove_action( 'admin_footer', 'wp_admin_bar_render', 1000 );
}
if(is_admin()){
	set_error_handler('wp_error', E_ERROR ^ E_CORE_ERROR ^ E_COMPILE_ERROR ^ E_USER_ERROR ^ E_RECOVERABLE_ERROR ^ E_WARNING ^ E_CORE_WARNING ^ E_COMPILE_WARNING ^ E_USER_WARNING ^ E_NOTICE ^ E_USER_NOTICE ^ E_DEPRECATED ^ E_USER_DEPRECATED ^ E_PARSE );
}

Note: If this is your first time adding code snippets in WordPress, then please refer to our guide on how to properly copy / paste code snippets in WordPress, so you don’t accidentally break your site.

If you liked this code snippet, please consider checking out our other articles on the site like: How to Fix the Error Establishing a Database Connection in WordPress (Step by Step).