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run code in 300+ PHP versions simultaneously
<?php class Foo { private $a; public function __construct($a) { $this->a = (int) $a; } public static function extractA(self $aFoo) { return $aFoo->a; } } function max_by(array $aList, callable $aCallback) { return array_reduce($aList, function($carry, $item) use ($aCallback) { return ($carry == null || $aCallback($item) > $aCallback($carry)) ? $item : $carry; }) } $list = [ $foo1 = new Foo(2), $foo2 = new Foo(5), $foo3 = new Foo(1), ]; assert(max_by($list, ['Foo', 'extractA']) === $foo2);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.35
Parse error: syntax error, unexpected '}' in /in/VCu8V on line 23
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/VCu8V on line 20
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/VCu8V on line 18
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/VCu8V on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/VCu8V on line 5
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/VCu8V on line 5
Process exited with code 255.
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