3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php ($f = function ($i) use(&$f) { $i++; echo $i; if ($i >= 10) { return; } $f($i); })(0);
based on HCMYX
Output for hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.1
12345678910
Output for 5.3.20 - 5.6.38
Parse error: syntax error, unexpected '(' in /in/HL7VG on line 10
Process exited with code 255.