Online PHP editor | refs for cmJn7

<?php class X { const TYPE = 'x'; } class Y { const TYPE = 'y'; } $y = new Y(); $x = new X(); $time = microtime(true); echo ($y::TYPE === 'y'); echo ($y::TYPE === 'x'); $time = microtime(true) - $time; echo '1 took' . number_format($time, 3); $time = microtime(true); echo ($y instanceof Y); echo ($y instanceof X); $time = microtime(true) - $time; echo '2 took' . number_format($time, 3);