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run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { function __construct() { echo get_class($this->getInstance()), PHP_EOL, get_class(static::getInstance()), PHP_EOL, get_class(self::getInstance()), PHP_EOL; } public static function getInstance() { static $getInstance; if (null == $getInstance) $getInstance = self::makeInstance(); return $getInstance; } public static function makeInstance() { return new stdClass(); } } $a = new A(); class B extends A { function __construct() { echo get_class($this->getInstance()), PHP_EOL, get_class(static::getInstance()), PHP_EOL, get_class(self::getInstance()), PHP_EOL; } public static function makeInstance() { return new ArrayObject(); } public function __destruct() { die(); } } $a = new B();
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
stdClass stdClass stdClass stdClass stdClass stdClass
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STATIC, expecting ')' in /in/CVSFs on line 8
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_STATIC, expecting ')' in /in/CVSFs on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/CVSFs on line 8
Process exited with code 255.