3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo($e) { $e+=1; } function bar(&$f) { $f+=1; } $a = 1;foo($a);echo "$a\n"; $b = 1;foo(&$b);echo "$b\n"; $c = 1;bar($c);echo "$c\n"; $d = 1;bar(&$d); echo "$d\n";
Output for 5.4.0 - 5.4.17
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/FQ5UN on line 11
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/FQ5UN on line 11 Deprecated: Call-time pass-by-reference has been deprecated in /in/FQ5UN on line 13 1 2 2 2
preferences:
197.45 ms | 1400 KiB | 55 Q