- serialize: documentation ( source)
- ksort: documentation ( source)
<?php
$arrays = array(
array( 'resize', 'width' => 2, 'height' => 3),
array( 'resize', 'height' => 3, 'width' => 2),
);
foreach($arrays as $array){
ksort($array);
echo serialize($array)."\n";
}