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run code in 200+ php & hhvm versions
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<?php $a = ['a' => 2, 'b'=> null, 's' => 0]; var_dump($a, array_filters($a));
based on fRmQE
Output for 7.0.0 - 7.3.0rc3
Fatal error: Uncaught Error: Call to undefined function array_filters() in /in/JABEZ:4 Stack trace: #0 {main} thrown in /in/JABEZ on line 4
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: Call to undefined function array_filters() in /in/JABEZ:4 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.30
Fatal error: Call to undefined function array_filters() in /in/JABEZ on line 4
Process exited with code 255.