3v4l.org

run code in 300+ PHP versions simultaneously
<?php // $baz = 'baz'; function foo(&$var, $x) { echo $GLOBALS["baz"]; $var =& $x; } $bar = 'bar'; foo($bar); var_dump($bar);
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught ArgumentCountError: Too few arguments to function foo(), 1 passed in /in/SvkX9 on line 9 and exactly 2 expected in /in/SvkX9:4 Stack trace: #0 /in/SvkX9(9): foo('bar') #1 {main} thrown in /in/SvkX9 on line 4
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught ArgumentCountError: Too few arguments to function foo(), 1 passed in /in/SvkX9 on line 9 and exactly 2 expected in /in/SvkX9:4 Stack trace: #0 /in/SvkX9(9): foo('bar') #1 {main} thrown in /in/SvkX9 on line 4
Process exited with code 255.
Output for 5.6.38, 7.0.0 - 7.0.33
Warning: Missing argument 2 for foo(), called in /in/SvkX9 on line 9 and defined in /in/SvkX9 on line 4 Notice: Undefined index: baz in /in/SvkX9 on line 5 string(3) "bar"

preferences:
203.27 ms | 402 KiB | 217 Q