3v4l.org

run code in 300+ PHP versions simultaneously
<?hh $foo = 'bar'; $array = [1,2,3]; foreach ($array as &$foo) { $foo = $foo * $foo; } var_dump($foo); $foo = 'derp'; var_dump($array);
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<?hh $foo = 'bar'; $array = [1,2,3]; foreach ($array as &$foo) { $foo = $foo * $foo; } var_dump($foo); $foo = 'derp'; var_dump($array);
Output for 8.0.13
Parse error: syntax error, unexpected variable "$foo" in /in/ubOQN on line 2
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected '$foo' (T_VARIABLE) in /in/ubOQN on line 2
Process exited with code 255.
preferences:
141.45 ms | 402 KiB | 173 Q