- var_dump: documentation ( source)
- array_merge: documentation ( source)
- array_values: documentation ( source)
<?php
//$a = array(array('a' => 1, 'b' => 3), array('c'=> 5, 'd' => 2));
//$b = array('a' => 21, 'b' => 23, 'c'=> 25, 'd' => 22);
$a = array(array(1, 3), array(5, 2));
$b = array(array(21, 23), array(25, 22));
var_dump(array_merge(array_values($a), array_values($b)));
//var_dump($a);
//var_dump(array_values($a));
?>