- var_dump: documentation ( source)
- reset: documentation ( source)
- asort: documentation ( source)
<?php
$your_array = array(0 =>array('codes'=>array(7,4,5)), 1 =>array('codes'=>array(4,45,1)));
function aasort (&$array, $key) {
$sorter=array();
$ret=array();
reset($array);
foreach ($array as $ii => $va) {
$sorter[$ii]=$va[$key];
}
asort($sorter);
foreach ($sorter as $ii => $va) {
$ret[$ii]=$array[$ii];
}
$array=$ret;
}
aasort($your_array,"codes");
var_dump($your_array);