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run code in 150+ php & hhvm versions
Bugs & Features
<?php // given: unset($undef); $null = NULL; $false = FALSE; $true = TRUE; // these operations: isset($var); empty($var); array_key_exists('var', $GLOBALS); // "defined" below
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.1.0
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/chLss on line 11
Process exited with code 255.