- print_r: documentation ( source)
- array_values: documentation ( source)
<?php
$array['ids'] = array( '0' => array( 'id' => 1, 'val' => 'one'), '2' => array( 'id' => 2, 'val' => 'two'), '1' => array( 'id' => 3, 'val' => 'three'));
print_r($array);
$array['ids'] = array_values($array['ids']);
print_r($array);