3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=5; $b=10; function test() { global $a, $b; $b=$a+$b } test(); echo $b; ?>
Output for 5.3.0 - 5.3.18, 5.4.0 - 5.4.8
Parse error: syntax error, unexpected '}' in mSl1L on line 12
Process exited with code 255.
preferences:
171.83 ms | 1395 KiB | 35 Q