3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b =& $a; $c =& $a; unset($a); $b = 2 echo $c;
Output for 5.4.0 - 5.4.28, 5.5.0 - 5.5.12
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/U7OED on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ECHO in /in/U7OED on line 7
Process exited with code 255.
preferences:
193.19 ms | 1395 KiB | 78 Q