3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(0); class FooClass {} $foo = new FooClass(); $foo->bar = "qux"; $thing = "bar"; $qux = "th"; $grault = "ing"; function th($waldo){ global $qux, $grault, $thing; return ${$qux . $grault} . $waldo; } echo ${($foo->${${$foo->bar}.((${qux}.${grault}===$qux.${grault})?${grault}:${$qux.$grault})})}(($foo->${${$foo->bar}.((${qux}.${grault}===$qux.${grault})?${grault}:${$qux.$grault})})); // echos 'barqux'
based on glWB6
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
barqux
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/dX8rB on line 17
Process exited with code 255.