Online PHP editor | refs for aitMH

<?php $a = '0e123'; var_dump($a == 0); var_dump($a == "0"); var_dump($a == 0x0); var_dump($a == true); var_dump($a !== false); var_dump($a !== true); echo "\n"; define('test', 0); var_dump($a == test); echo "\n"; var_dump($a == " $a"); var_dump($a == '0bla'); var_dump($a == '0ebla'); echo "\n"; var_dump($a == '0xe'); var_dump($a == '0xe0'); var_dump($a == '0x0e'); var_dump($a == ('0' . 'x0e'));