name : opcache-default.blacklist ; The blacklist file is a text file that holds the names of files ; that should not be accelerated. The file format is to add each filename ; to a new line. The filename may be a full path or just a file prefix ; (i.e., /var/www/x blacklists all the files and directories in /var/www ; that start with 'x'). Line starting with a ; are ignored (comments). ; Files are usually triggered by one of the following three reasons: ; 1) Directories that contain auto generated code, like Smarty or ZFW cache. ; 2) Code that does not work well when accelerated, due to some delayed ; compile time evaluation. ; 3) Code that triggers an OPcache bug.