opcache_is_script_cached Tells whether a script is cached in OPCache &reftitle.description; booleanopcache_is_script_cached stringfile This function checks if a PHP script has been cached in OPCache. This can be used to more easily detect the "warming" of the cache for a particular script. &reftitle.parameters; file The path to the PHP script to be checked. &reftitle.returnvalues; Returns &true; if file is cached in OPCache, &false; otherwise. &reftitle.seealso; opcache_compile_file