3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(&$var) { $var++; } $a=5; foo(&$a); function x(&$a) { echo $a; } // x(&$a);
Output for 5.4.0 - 5.4.11
Fatal error: Call-time pass-by-reference has been removed in /in/t0idH on line 10
Process exited with code 255.
Output for 5.3.28 - 5.3.29
Deprecated: Call-time pass-by-reference has been deprecated in /in/aATCA on line 10
Output for 5.3.0 - 5.3.27
Deprecated: Call-time pass-by-reference has been deprecated in /in/t0idH on line 10
preferences:
176.66 ms | 1395 KiB | 49 Q