<?php function is_sorted($array) { $n = count($array); for ($a=0; $a<$n-1; $a++) { for ($b=$a+1; $b<$n; $b++) { if ($array[$a] > $array[$b]) { return false; } } } return true; } $array = array(INF, array(), (object)array()); sort($array); var_dump(is_sorted($array));
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