3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() { echo 'call'; return [1,2,3]; } foreach(foo() as &$item) { echo $item, PHP_EOL; $item = 5; echo $item, PHP_EOL; }
based on R1sLU
Output for 5.5.0 - 7.2.0
call1 5 2 5 3 5
Output for 5.4.0 - 5.4.45
Fatal error: Cannot create references to elements of a temporary array expression in /in/AVPeU on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/AVPeU on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/AVPeU on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/AVPeU on line 5
Process exited with code 255.