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run code in 200+ php & hhvm versions
Bugs & Features
<?php ffilter_var('number', FILTER_VALIDATE_REGEXP, array( 'options' => array( 'regex' => '/[0-9\*\+]{3,15}$/', 'default' => null ) ));
based on X6evP
Output for 7.0.0 - 7.1.7, 7.2.0
Fatal error: Uncaught Error: Call to undefined function ffilter_var() in /in/Sj25R:2 Stack trace: #0 {main} thrown in /in/Sj25R on line 2
Process exited with code 255.
Output for 7.1.10

Process exited with code 137.
Output for 5.3.20 - 5.6.28
Fatal error: Call to undefined function ffilter_var() in /in/Sj25R on line 2
Process exited with code 255.