Online PHP editor | refs for DJh3K

<?php $data = array ( 'username' => array ( 'notEmpty' => 'Please fill this field', 'alphaNumeric' => 'Username can only be letters and numbers.', 'between' => 'Username must be from 3 to 15 characters only.' ), 'first_name' => array ( '_empty' => 'This field cannot be left empty' ), 'last_name' => array ( '_empty' => 'This field cannot be left empty' ) ); $output = array_map(function ($a) { return reset($a); }, $data); print_r($output);