3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<? $x = "jasldfns"; $i = strlen($x); echo preg_match('~[0-9a-zA-Z]{$i}~', $x); ?>
based on BnQC8
Output for 5.4.34 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
0
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.4.32
<? $x = "jasldfns"; $i = strlen($x); echo preg_match('~[0-9a-zA-Z]{$i}~', $x); ?>