- var_dump: documentation ( source)
- uasort: documentation ( source)
- in_array: documentation ( source)
<?php
$deps = [
['for' => '$T3', 'deps' => ['$T2'] ],
['for' => '$T1', 'deps' => [] ],
['for' => '$T2', 'deps' => ['$T1'] ]
];
uasort($deps, function($a, $b){
//if(!in_array($a['for'], $b['deps']) && !in_array($b['for'], $a['deps']))
// return 0;
return in_array($a['for'], $b['deps']) ? -1 : 1;
});
var_dump($deps);