<?php $data=array(array(2,1),array(1,2),array(1,2),array(2,1),array(2,3),array(3,2),array(4,5)); $data = array_map(function($value) { sort($value); return serialize($value); }, $data); $data = array_unique($data); $data = array_map('unserialize', $data); array_walk($data, 'sort'); var_dump($data);
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Value for `_results` contains invalid data `array`