opcache_is_script_cached(3) php man page | unix.com

OPCACHE_IS_SCRIPT_CACHED(3)						 1					       OPCACHE_IS_SCRIPT_CACHED(3)

opcache_is_script_cached - Tells whether a script is cached in OPCache

SYNOPSIS
       boolean opcache_is_script_cached (string  $file)

DESCRIPTION
	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.

PARAMETERS
	      o $file
		- The path to the PHP script to be checked.

RETURN VALUES
	Returns TRUE if $file is cached in OPCache, FALSE otherwise.

SEE ALSO
       opcache_compile_file(3).

PHP Documentation Group 											       OPCACHE_IS_SCRIPT_CACHED(3)