3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo {} class Bar { public function __construct(Foo $foo = 'baz') { $this->foo = $foo; } } var_dump(new Bar());
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Fatal error: Default value for parameters with a class type hint can only be NULL in /in/HtVIu on line 6
Process exited with code 255.
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168.55 ms | 1395 KiB | 53 Q