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run code in 200+ php & hhvm versions
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<?php use function Test\test as test; spl_autoload_register(function ($name) { var_dump($name); }); test();
based on ETBcR
Output for 7.0.0 - 7.3.0rc4
Fatal error: Uncaught Error: Call to undefined function Test\test() in /in/o9dbY:9 Stack trace: #0 {main} thrown in /in/o9dbY on line 9
Process exited with code 255.
Output for 5.6.0 - 5.6.23
Fatal error: Call to undefined function Test\test() in /in/o9dbY on line 9
Process exited with code 255.