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<?php $n = 1000000; // First a test with a empty array $array = array(); $time_start = microtime(true); $i = 0; while($i < $n) { $devnull = isset($array[++$i]); } $time_end = microtime(true); $time_while1= $time_end-$time_start; echo number_format($time_while1, 3, '.', '') ." seconds - isset(array[i]) on empty array \n";

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