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run code in 150+ php & hhvm versions
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<?php echo (__FILE__); echo "\n"; echo (__FILENAME__);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
/in/JQplK Notice: Use of undefined constant __FILENAME__ - assumed '__FILENAME__' in /in/JQplK on line 5 __FILENAME__