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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump($http_response_header); $x = fopen('php://stdin', 'r'); var_dump($http_response_header);
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: http_response_header in /in/06J6J on line 2 NULL Notice: Undefined variable: http_response_header in /in/06J6J on line 4 NULL
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: http_response_header in /in/06J6J on line 2 NULL Notice: Undefined variable: http_response_header in /in/06J6J on line 4 NULL