<?php class chi extends par implements int { } class par { } interface int { } $x = new chi; if ($x instanceof chi) { echo "chi\n"; } if ($x instanceof par) { echo "par\n"; } if ($x instanceof int) { echo "int\n"; }
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Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).