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run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { public function __construct() { var_dump('created!'); } } class Bar { public function getFoo() { static $foo; return $foo ?? ($foo = new Foo); } } $bar = new Bar; var_dump($bar->getFoo(), $bar->getFoo(), $bar->getFoo());
based on 1nYM2
Output for 7.0.0 - 7.2.0
string(8) "created!" object(Foo)#2 (0) { } object(Foo)#2 (0) { } object(Foo)#2 (0) { }
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/quomT on line 17
Process exited with code 255.