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run code in 200+ php & hhvm versions
Bugs & Features
<?php class MyClass { const CONST_VALUE = 'A constant value'; } $classname = 'MyClass'; echo $classname::CONST_VALUE; // As of PHP 5.3.0 echo MyClass::CONST_VALUE; class OtherClass extends MyClass { public static $my_static = 'static var'; public static function doubleColon() { echo parent::CONST_VALUE . "\n"; echo self::$my_static . "\n"; } } $classname = 'OtherClass'; echo $classname::doubleColon(); // As of PHP 5.3.0 OtherClass::doubleColon(); ?>
Output for 5.3.0 - 7.2.0
A constant valueA constant valueA constant value static var A constant value static var
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting ',' or ';' in /in/2Bfc8 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting ',' or ';' in /in/2Bfc8 on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/2Bfc8 on line 5
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_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/2Bfc8 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/2Bfc8 on line 5
Process exited with code 255.