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run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace Something { interface Hello { public function hello(\SomethingDifferent\World $world); } } namespace Hell { use Something\Hello; use SomethingDifferent\World; class HelloWorld implements Hello { public function hello(World $world) { } } $hell = new HelloWorld(); $hell->hello(); }
based on g2koR
Output for 7.1.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Hell\HelloWorld::hello(), 0 passed in /in/kC37U on line 21 and exactly 1 expected in /in/kC37U:16 Stack trace: #0 /in/kC37U(21): Hell\HelloWorld->hello() #1 {main} thrown in /in/kC37U on line 16
Process exited with code 255.
Output for 7.0.0 - 7.0.14
Fatal error: Uncaught TypeError: Argument 1 passed to Hell\HelloWorld::hello() must be an instance of SomethingDifferent\World, none given, called in /in/kC37U on line 21 and defined in /in/kC37U:16 Stack trace: #0 /in/kC37U(21): Hell\HelloWorld->hello() #1 {main} thrown in /in/kC37U on line 16
Process exited with code 255.
Output for hhvm-3.12.0
Warning: hello() expects exactly 1 parameter, 0 given in /in/kC37U on line 18 Catchable fatal error: Argument 1 passed to Hell\HelloWorld::hello() must be an instance of SomethingDifferent\World, undefined variable given in /in/kC37U on line 18
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 Hell\HelloWorld::hello() must be an instance of SomethingDifferent\World, none given, called in /in/kC37U on line 21 and defined in /in/kC37U on line 16
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/kC37U on line 2
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/kC37U on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kC37U on line 2
Process exited with code 255.