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

Edit report at https://bugs.php.net/bug.php?id=79382&edit=1 ID: 79382 Updated by: daverandom@php.net 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 Block user comment: N Private report: N New Comment: Reading through the docs for the opcache ini settings[1] I note that the default value for opcache.optimization_level was changed in 7.3 to remove a flag, and a brief wander through the source reveals that the flag in question acquired new meaning between 7.2 and 7.3[2], and is also described as "unsafe", as is one of its neighbours that was removed from the default in 5.6.18. Hypothetically speaking, if one were to set up a new PHP installation by, say, copy-pasting the same ini files that originate in ancient history and have been passed from version to version since PHP 5, and hypothetically they maybe had buggered about with opcache related settings at some point and "turned everything on to make it faster", then hypothetically they might end up in a situation where those unsafe flags are set. Hypothetically. I could be way off base there, but whatever is going on this has opcache fingerprints all over it. The fact that you are consistently seeing the same issue across many point releases in two minor version branches indicates that this is a config/environment issue. As such, the best place to start would be to conduct a thorough review of the active PHP configuration (i.e. phpinfo()), paying particularly close attention to opcache. I feel like this is stating the obvious, but if were the case that multiple large scale foss projects had been fundamentally incompatible with new releases of PHP for the last 14+ months, someone would probably have noticed before now. [1] https://www.php.net/manual/en/opcache.configuration.php [2] https://github.com/php/php-src/commit/a02a126d54077d1f2f3c9a54a00a7e75d5b8f562#diff-18518eac33b6061b9da5d72d4637417a Previous Comments: ------------------------------------------------------------------------ [2020-03-13 23:35:41] bugreports at gmail dot com developers simply need to learn that it's a terrible idea to taint the global namespace with random *unprefixed* userland functions eveniif the function_exists() hack would work what makes you thinking that your handcrafted function is signature and *behavior" compatible? ------------------------------------------------------------------------ [2020-03-13 23:11:12] admin at franceserv dot fr Description: ------------ Hello, Several websites are affected (Wordpress, NextCloud, PMB, Phpbb etc ...) on PHP 7.3.x till this version (7.3.15) and same with PHP 7.4 till now since several month. The problem isn't present with PHP 7.2.x and lower. The affected function is : if (!function_exists('getallheaders')) With PHP 7.3 and 7.4 the following error is reported : Fatal error: Cannot redeclare getallheaders() in ... With exactly the same website without modification files the problem is not present on PHP 7.2 and lower. Sample error message on PHP 7.3 and 7.4 : Nextcloud : Fatal error: Cannot redeclare getallheaders() in /home/httpd/*/*/*/*/*/3rdparty/ralouphie/getallheaders/src/getallheaders.php on line 10 PhpBB : /home/httpd/*/*/*/*/*/forum/vendor/ralouphie/getallheaders/src/getallheaders.php on line 10 PMB : /home/httpd/*/*/*/*/*/includes/apache_functions.inc.php on line 10 Wordpress etc ... All web developers are saying to rename the function "function getallheaders()" to avoid this error message ... which is not possible to everybody which are not developers ... I'm using PHP 7.2, 7.3 and 7.4 on PHP-FPM with compilation install. Someone could solve this problem which become more visible since people are upgrading their website to PHP 7.3 and + ? Thank you in advance. Actual result: -------------- Fatal error: Cannot redeclare getallheaders() in ... ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79382&edit=1