3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f1() { echo 1; return true; } function f2() { echo 2; return false; } $a = false; $a &&= f2();
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '=' in /in/dNpMl on line 14
Process exited with code 255.

preferences:
183.08 ms | 1399 KiB | 53 Q