Online PHP editor | refs for hIKP2

<?php error_reporting(0); $results = array(); for($i = 0; $i < 3000; $i++) { $results[] = (object) rand(0, 100000); } $start = microtime(true); for($i = 0; $i < 1000; $i++) { $alreadyOutput = array(); foreach ($results as $result) { if(in_array($result->date, $alreadyOutput)){ continue; } $alreadyOutput[] = $result->date; } } echo "in_array: ".(microtime(true) - $start)."ms || "; $start2 = microtime(true); for($i = 0; $i < 1000; $i++) { $echoedArray = array(); foreach ($results as $result) { if ($echoedArray[$result->date]) { continue; } $echoedArray[$result->date] = true; } } echo "by key: ".(microtime(true) - $start2)."ms";