<?php $arr = [ 1 => ['id' => 1, 'sort' => 1], 3 => ['id' => 3, 'sort' => 3], 2 => ['id' => 2, 'sort' => 2], ]; $keys = array_map(function($val) { return $val['sort']; }, $arr); array_multisort($keys, $arr); var_export($arr);
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