apcu/apcu.php [270:319]:
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    public function rewind() {}

    /**
     * Checks if the current iterator position is valid
     * @link https://php.net/manual/en/apciterator.valid.php
     * @return bool Returns TRUE if the current iterator position is valid, otherwise FALSE.
     */
    public function valid() {}

    /**
     * Gets the current item from the APCIterator stack
     * @link https://php.net/manual/en/apciterator.current.php
     * @return mixed|false Returns the current item on success, or FALSE if no more items or exist, or on failure.
     */
    public function current() {}

    /**
     * Gets the current iterator key
     * @link https://php.net/manual/en/apciterator.key.php
     * @return string|int|false Returns the key on success, or FALSE upon failure.
     */
    public function key() {}

    /**
     * Moves the iterator pointer to the next element
     * @link https://php.net/manual/en/apciterator.next.php
     * @return bool Returns TRUE on success or FALSE on failure.
     */
    public function next() {}

    /**
     * Gets the total number of cache hits
     * @link https://php.net/manual/en/apciterator.gettotalhits.php
     * @return int|false The number of hits on success, or FALSE on failure.
     */
    public function getTotalHits() {}

    /**
     * Gets the total cache size
     * @link https://php.net/manual/en/apciterator.gettotalsize.php
     * @return int|bool The total cache size.
     */
    public function getTotalSize() {}

    /**
     * Get the total count
     * @link https://php.net/manual/en/apciterator.gettotalcount.php
     * @return int|bool The total count.
     */
    public function getTotalCount() {}
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apcu/apcu.php [610:659]:
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    public function rewind() {}

    /**
     * Checks if the current iterator position is valid
     * @link https://php.net/manual/en/apcuiterator.valid.php
     * @return bool Returns TRUE if the current iterator position is valid, otherwise FALSE.
     */
    public function valid() {}

    /**
     * Gets the current item from the APCUIterator stack
     * @link https://php.net/manual/en/apcuiterator.current.php
     * @return mixed|false Returns the current item on success, or FALSE if no more items or exist, or on failure.
     */
    public function current() {}

    /**
     * Gets the current iterator key
     * @link https://php.net/manual/en/apcuiterator.key.php
     * @return string|int|false Returns the key on success, or FALSE upon failure.
     */
    public function key() {}

    /**
     * Moves the iterator pointer to the next element
     * @link https://php.net/manual/en/apcuiterator.next.php
     * @return bool Returns TRUE on success or FALSE on failure.
     */
    public function next() {}

    /**
     * Gets the total number of cache hits
     * @link https://php.net/manual/en/apcuiterator.gettotalhits.php
     * @return int|false The number of hits on success, or FALSE on failure.
     */
    public function getTotalHits() {}

    /**
     * Gets the total cache size
     * @link https://php.net/manual/en/apcuiterator.gettotalsize.php
     * @return int|false The total cache size.
     */
    public function getTotalSize() {}

    /**
     * Get the total count
     * @link https://php.net/manual/en/apcuiterator.gettotalcount.php
     * @return int|false The total count.
     */
    public function getTotalCount() {}
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