3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php trait Singleton { protected static $instance; final public static function getInstance() { if (!isset(static::$instance)) { static::$instance = new static; } return static::$instance; } } class a1{ use Singleton; } class a2{ use Singleton; } $a = a1::getInstance(); $b = a2::getInstance(); var_dump($a,$b);
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, 5.4.0 - 5.4.34
Parse error: syntax error, unexpected '<' in /in/GgYG0 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 '<' in /in/GgYG0 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GgYG0 on line 2
Process exited with code 255.
preferences:
236.14 ms | 1395 KiB | 124 Q