3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class T { public function __construct($v) { $this->v = $v; } public function __toString() { return 'a'; } } $list = [new T(1), new T(2)]; usort($list, function($a, $b) { return strcmp($a, $b); }); // PHP has 2, then 1 // HHVM has 1, then 2 print_r($list);
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => T Object ( [v] => 1 ) [1] => T Object ( [v] => 2 ) )
Output for 5.4.0 - 5.6.28
Array ( [0] => T Object ( [v] => 2 ) [1] => T Object ( [v] => 1 ) )
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/TrG4c on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/TrG4c on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/TrG4c on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/TrG4c on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/TrG4c on line 4
Process exited with code 255.