<?php $array = ['a' => ['a' => 1, 'b' => 2], 'b'=> ['a' => 0, 'b' => 1]]; usort($array, function($a, $b) { return $a['a'] <=> $b['a'] ?: $a['b'] <=> $b['b']; }); var_dump($array);
You have javascript disabled. You will not be able to edit any code.