Bug #69297 [Asn->Csd]: function_exists strange behavior with OPCache on disabled function

Edit report at https://bugs.php.net/bug.php?id=69297&edit=1 ID: 69297 Updated by: laruence@php.net Reported by: d dot ccigii at gmail dot com Summary: function_exists strange behavior with OPCache on disabled function -Status: Assigned +Status: Closed Type: Bug Package: opcache Operating System: GNU/Linux, Centos 6.6 PHP Version: 5.6.7 Assigned To: laruence Block user comment: N Private report: N New Comment: Automatic comment on behalf of laruence Revision: http://git.php.net/?p=php-src.git;a=commit;h=d380d1cb1ba48c41682f749692b78a10e91dd070 Log: Fixed Bug #69297 (function_exists strange behavior with OPCache on disabled function) Previous Comments: ------------------------------------------------------------------------ [2015-03-25 11:53:54] d dot ccigii at gmail dot com Description: ------------ I stumbled upon strange behavior of php function function_exists(), when called on disabled function (in php.ini - disable_function). The thing is, that if I provide the function name parameter directly as string, the result is different than when provided as variable. When called first time, result is fine. But when the result is served by the OPCache, results are wrong. Tested in clean build of PHP 5.6 and 5.7, with shipped OPCache (Zend OPcache v7.0.4-dev). In PHP 5.5, the results are correct. PHP Build: ./configure --prefix=/usr/local/php/5.6.7-test PHP config: disable_functions = posix_getpwuid date.timezone = Europe/Prague zend_extension=/usr/local/php/5.6.7-test/lib/php/extensions/no-debug-non-zts-20131226/opcache.so Test script: --------------- <? echo phpversion() . "\n"; $f='posix_getpwuid'; $r1=function_exists('posix_getpwuid'); $r2=function_exists($f); echo "\n\n"; echo "string: "; var_dump ($r1); echo "var. : "; var_dump ($r2); echo "opcache status: "; var_dump(opcache_get_status()['opcache_enabled']); Expected result: ---------------- This is the result of the first call, this is how it should be: # /usr/local/php/php-TEST/bin/php-cgi -c /data/web/php-test/ fce.php X-Powered-By: PHP/5.6.7 Content-type: text/html; charset=UTF-8 5.6.7 string: bool(false) # <--- correct result var. : bool(false) opcache status: bool(true) Actual result: -------------- Any subsequent call: # /usr/local/php/php-TEST/bin/php-cgi -c /data/web/php-test/ fce.php X-Powered-By: PHP/5.6.7 Content-type: text/html; charset=UTF-8 5.6.7 string: bool(true) # <--- HERE IS THE ERROR var. : bool(false) opcache status: bool(true) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69297&edit=1