<?php $array = []; $st = microtime(TRUE); for($i = 0; $i < 10000000; $i++){ $result = $array["search"] ?? NULL; } echo number_format(microtime(TRUE) - $st, 10) . "\n"; $st = microtime(TRUE); for($i = 0; $i < 10000000; $i++){ if(isset($array["search"])){ $result = $array["search"]; }else{ $result = NULL; } } echo number_format(microtime(TRUE) - $st, 10) . "\n";
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