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run code in 150+ php & hhvm versions
Bugs & Features
<?php trait Bar { public static function dump() { var_dump( '__CLASS__: ' . __CLASS__, 'self::class: ' . self::class, 'static::class: ' . static::class, 'self::foo(): ' . self::qux()); } } class Foo { use Bar; public static $foo = __CLASS__; public static function qux() { return __CLASS__; } } Foo::dump();
Output for 5.5.24 - 5.6.28, 7.0.0 - 7.1.0
string(14) "__CLASS__: Foo" string(16) "self::class: Foo" string(18) "static::class: Foo" string(16) "self::foo(): Foo"
Output for hhvm-3.12.0
string(14) "__CLASS__: Foo" string(16) "self::class: Bar" string(18) "static::class: Foo" string(16) "self::foo(): Foo"
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected 'class' (T_CLASS), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in /in/PcPqB on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/PcPqB on line 3
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 T_STRING in /in/PcPqB on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/PcPqB on line 3
Process exited with code 255.