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run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace Concrete\Foo { class Foo {} class_alias('\Concrete\Foo\Foo', 'DerpFoo'); } namespace Concrete\BetterFoo { use DerpFoo; class BetterFoo extends DerpFoo {} } namespace Concrete\Test { class Test { public function __construct(DerpFoo $foo) {} } $f = new Test(new \Concrete\BetterFoo\BetterFoo); }
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught TypeError: Argument 1 passed to Concrete\Test\Test::__construct() must be an instance of Concrete\Test\DerpFoo, instance of Concrete\BetterFoo\BetterFoo given, called in /in/OQJur on line 25 and defined in /in/OQJur:21 Stack trace: #0 /in/OQJur(25): Concrete\Test\Test->__construct(Object(Concrete\BetterFoo\BetterFoo)) #1 {main} thrown in /in/OQJur on line 21
Process exited with code 255.
Output for hhvm-3.12.0
Catchable fatal error: Argument 1 passed to Concrete\Test\Test::__construct() must be an instance of Concrete\Test\DerpFoo, Concrete\BetterFoo\BetterFoo given in /in/OQJur on line 21
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.6.28
Catchable fatal error: Argument 1 passed to Concrete\Test\Test::__construct() must be an instance of Concrete\Test\DerpFoo, instance of Concrete\BetterFoo\BetterFoo given, called in /in/OQJur on line 25 and defined in /in/OQJur on line 21
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/OQJur on line 3
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/OQJur on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OQJur on line 3
Process exited with code 255.