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run code in 150+ php & hhvm versions
Bugs & Features
<?php trait Singleton { final public static function getInstance(){ if (!isset(static::$instance)) { static::$instance = new static; } return static::$instance; } } abstract class Abudabia { static $instance; use Singleton; } class a1 extends Abudabia { public function set() { return 'allah ahbar'; } } class a2 extends Abudabia { public function get() { return 'algazira'; } } $a = a1::getInstance(); $b = a2::getInstance(); var_dump($a, $a->set(),$b);
based on phBQ9
Output for 5.4.0 - 7.1.0
object(a1)#1 (0) { } string(11) "allah ahbar" object(a1)#1 (0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/37Kk8 on line 2
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/37Kk8 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/37Kk8 on line 2
Process exited with code 255.