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<?php $arr = array( array(5,6), array(1,2), array(6,5) ); array_walk($arr, 'sort'); $deduped = array(); foreach ($arr as $val) { $deduped[serialize($val)] = $val; } $arr = array_values($deduped); print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => 5 [1] => 6 ) [1] => Array ( [0] => 1 [1] => 2 ) )

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