3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'texta'; $b = 'textb'; $a = $a . $b; //textatextb $b = substr($a, 0, strlen($a) - strlen($b)); //texta $a = substr($a, strlen($b)); //textb echo "a = $a; b = $b";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
a = textb; b = texta