3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait Singleton { final public static function getInstance() { static $instance; if (!isset(static::$instance)) { static $instance; static::$instance = new static; } return static::$instance; } } abstract class Abudabia { use Singleton; } abstract class Mozambik { use Singleton; } class a1 extends Abudabia { public function set() { return 'allah ahbar'; } } class a2 extends Mozambik { public function get() { return 'algazira'; } } $a = a1::getInstance(); $b = a2::getInstance(); var_dump($a->set(),$b->get());
Output for 8.3.0 - 8.3.6
Fatal error: Duplicate declaration of static variable $instance in /in/JRjPi on line 8
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Error: Access to undeclared static property a1::$instance in /in/JRjPi:9 Stack trace: #0 /in/JRjPi(40): Abudabia::getInstance() #1 {main} thrown in /in/JRjPi on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Access to undeclared static property: a1::$instance in /in/JRjPi:9 Stack trace: #0 /in/JRjPi(40): Abudabia::getInstance() #1 {main} thrown in /in/JRjPi on line 9
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Access to undeclared static property: a1::$instance in /in/JRjPi on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/JRjPi on line 2
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/JRjPi on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JRjPi on line 2
Process exited with code 255.
preferences:
223.66 ms | 404 KiB | 342 Q