Bug #79382 [Com]: Fatal error: Cannot redeclare getallheaders() in ...

Edit report at https://bugs.php.net/bug.php?id=79382&edit=1 ID: 79382 Comment by: bugreports at gmail dot com Reported by: admin at franceserv dot fr Summary: Fatal error: Cannot redeclare getallheaders() in ... Status: Open Type: Bug Package: *General Issues Operating System: Linux PHP Version: 7.3.15 and 7.4 Block user comment: N Private report: N New Comment: that would also work better if you don't want a seperated include file which could be thrown away all togehter after deciding no longer support anything below PHP 7.3 on newer php versions this would also optimized out completly and avoid the issue of that bugreport as well as the terrible runtime overhead of function_exists() if(PHP_VERSION_ID < 70300)) { function getallheaders() { } } Previous Comments: ------------------------------------------------------------------------ [2020-03-14 14:22:39] bugreports at gmail dot com "disable_functions" should throw an exception when a disabled function is called so one can handle it proper without spread *slow and expensive* function exists into the codebase - try/catch is much faster in cases where it don't throw such compat layers defining a function which is part of a newer php release should go into a include file because code like below would be completly optimized out by opcache given the constant nature known at "compile time" if(PHP_VERSION_ID < 70300) { require 'php73.inc.php'; } ------------------------------------------------------------------------ [2020-03-14 14:14:34] admin at franceserv dot fr This strange behavior seem to exist since 13 years at least : https://www.php.net/manual/fr/function.function-exists.php#67947 When a function is disabled, if we check this function with function_exists() it's reply "don't exist", but if we are trying to declare the function it's reply "exist already". Funny :) ------------------------------------------------------------------------ [2020-03-14 13:20:45] admin at franceserv dot fr My friend and me found the BUG :) When the function "getallheaders" is disabled with disable_functions in php.ini, the function isn't visible by function_exists() but if we redeclare it, it's raise an error (instead a disabled function warning). We are thinking it's really a bug because before 7.3 the behavior isn't same. Could you check on your side please with PHP 7.3.x or 7.4.x ? ------------------------------------------------------------------------ [2020-03-14 12:36:43] admin at franceserv dot fr Yes exactly, the file is this one : https://github.com/ralouphie/getallheaders/blob/develop/src/getallheaders.php The condition "if (!function_exists('getallheaders'))" isn't checked and I need (same for few people over Internet too) rename the function "function getallheaders()" to "function _something_different_here_getallheaders()" to avoid the problem ... A friend is using PHP 7.4 and he don't have this problem, but I don't know where to look because a configuration which change behavior of the function "function_exists()" is very strange. ------------------------------------------------------------------------ [2020-03-14 10:31:56] cmb@php.net Among others, this is about <https://github.com/ralouphie/getallheaders/blob/develop/src/getallheaders.php>. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=79382 -- Edit this bug report at https://bugs.php.net/bug.php?id=79382&edit=1