(PECL apcu >= 5.0.0) Get total cache hits

(PECL apcu >= 5.0.0) Get iterator key public

(PECL apcu >= 5.0.0) Get total count public

(PECL apcu >= 5.0.0) Rewinds iterator public

(PECL apcu >= 5.0.0) Constructs an APCUIterator iterator object

(PECL apcu >= 5.0.0) Get total cache size

(PECL apcu >= 5.0.0) Checks if current position is valid

(PECL apcu >= 5.0.0) Get current item public

(PECL apcu >= 5.0.0) Move pointer to next item