<?php $ar = ['a', 'b', 'a', 'c']; uasort($ar, function($a, $b){ if ($a > $b) { return 1; } if ($a < $b) { return -1; } return 0; }); print_r($ar); echo PHP_EOL; uasort($ar, function($a, $b){ return strcasecmp($a, $b); }); print_r($ar); echo PHP_EOL; uasort($ar, function($a, $b){ return strcmp($a, $b); }); print_r($ar);
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