<?php	

		if(isset($_GET['success']) === true && empty($_GET['success']) === true){

			echo 'your details have been updated!';

		}	else 	{

		if(empty($_POST) === false && empty($errors) === true)	{

			$update_data = array(

 

				'first_name' => $_POST['first_name'],

				'last_name' => $_POST['last_name'],

				'email' => $_POST['email']

			);

			update_user($update_data);

			header('Location: settings.php?success');

			exit();

 

		}	else if (empty($errors) === false)	{

			echo output_errors($errors);

		}

?>	

$update_data = array(

 

				'first_name' => $_POST['first_name'],

				'last_name' => $_POST['last_name'],

				'email' => $_POST['email']

			);

$update_data = array(

 

				'email' => $_POST['email']

				'first_name' => $_POST['first_name'],

				'last_name' => $_POST['last_name'],

			);

 

function update_user($update_data)	{

	global $session_user_id;

	$update = array();

	array_walk($update_data, 'array_sanitize');

 

	foreach($update_data as $field=>$data);	{

		$update[] = '`' . $field . '` = \'' . $data . '\'';

	}

	mysql_query("UPDATE `users` SET " . implode(', ', $update) . " WHERE `USER_id` = $session_user_id");

}

 

foreach($update_data as $field=>$data); {

 

Warning: array_walk() expects parameter 2 to be a valid callback, function 'array_sanitize' not found or invalid function name