3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 3; $b = 4; $a = ($b = $a) = $b; echo $a; echo $b;
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.20, 5.5.0 - 5.5.4
Parse error: syntax error, unexpected '=' in /in/7TlE9 on line 5
Process exited with code 255.
preferences:
169.97 ms | 1395 KiB | 61 Q