3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo($a, $b) { return $a + $b; } $x = 2; $y = 3; echo foo($x, &$y);
based on pA2ZY
Output for 7.0.0 - 7.0.1
Parse error: syntax error, unexpected '&' in /in/lmN08 on line 10
Process exited with code 255.
Output for 5.4.0 - 5.6.16
Fatal error: Call-time pass-by-reference has been removed; If you would like to pass argument by reference, modify the declaration of foo(). in /in/lmN08 on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Deprecated: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of foo(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/lmN08 on line 10 5
Output for 5.2.5 - 5.2.17
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of foo(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in /in/lmN08 on line 10 5
Output for 5.2.1 - 5.2.4
Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of foo(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /in/lmN08 on line 10 5
Output for 4.3.0 - 5.2.0
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of foo(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /in/lmN08 on line 10 5