- var_dump: documentation ( source)
- array_merge: documentation ( source)
<?php
$myArray = array(
'att' => array(
841 => 'on_time',
842 => 'not_time',
843 => 'not_time',
),
'entatt' => array(
841 => 'unexcused',
842 => 'unexcused',
843 => 'late',
),
);
$result = array_merge($myArray['att'], $myArray['entatt']);
var_dump($result);