PHP CachingIterator hasNext() Function Last Updated : 09 Aug, 2023 Summarize Comments Improve Suggest changes Share Like Article Like Report The CachingIterator::hasNext() function is an inbuilt function in PHP that is used to iterate the next element in the iterator. CachingIterator class is to cache the elements of an underlying iterator to improve performance when iterating over the same data multiple times. Syntax: public CachingIterator::hasNext(): boolParameters: This function does not accept any parameters. Return Values: This function returns a boolean value true if there is a next element available in the iterator, or false if the iterator has reached the end, and there are no more elements to iterate over. Program 1: The following program demonstrates the CachingIterator::hasNext() function. PHP <?php $data = array('G', 'e', 'e', 'k', 's'); $iterator = new ArrayIterator($data); $cachingIterator = new CachingIterator($iterator); while ($cachingIterator->hasNext()) { $current = $cachingIterator->current(); echo $current ; $cachingIterator->next(); } ?> OutputGeek Program 2: The following program demonstrates the CachingIterator::hasNext() function. PHP <?php // Sample data $data = [1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; $iterator = new ArrayIterator($data); $cachingIterator = new CachingIterator($iterator); while ($cachingIterator->hasNext()) { $current = $cachingIterator->current(); // Check if the iterator has more elements // after the current one if ($cachingIterator->hasNext()) { echo $current.' ' ; } $cachingIterator->next(); } ?> Output 1 2 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 Reference: https://www.php.net/manual/en/cachingiterator.hasnext.php Comment More infoAdvertise with us Next Article PHP | CachingIterator getFlags() Function N neeraj3304 Follow Improve Article Tags : PHP PHP-function PHP-Iterators Similar Reads PHP | CachingIterator next() Function The CachingIterator::next() function is an inbuilt function in PHP which is used to move the iterator to the forward. Syntax: void CachingIterator::next( void ) Parameters: This function does not accept any parameters. Return Value: This function does not return any value. Below programs illustrate 1 min read PHP | CachingIterator key() Function The CachingIterator::key() function is an inbuilt function in PHP which is used to return the key for the current element. Syntax: scalar CachingIterator::key( void ) Parameters: This function does not accept any parameters. Return Value: This function returns the key value of the current element. B 1 min read PHP | CachingIterator getCache() Function The CachingIterator::getCache() function is an inbuilt function in PHP which is used to retrieve the contents of the cache. Syntax: array CachingIterator::getCache( void ) Parameters: This function does not accept any parameters. Return Value: This function returns an array containing the cache item 2 min read PHP | CachingIterator getFlags() Function The CachingIterator::getFlags() function is an inbuilt function in PHP which is used to get the bitmask of the flags used for this CachingIterator instance. Syntax: int CachingIterator::getFlags( void ) Parameters: This function does not accept any parameters. Return Value: This function returns the 1 min read PHP | CachingIterator getInnerIterator() Function The CachingIterator::getInnerIterator() function is an inbuilt function in PHP which is used to return the iterator sent to the constructor. Syntax: Iterator CachingIterator::getInnerIterator( void ) Parameters: This function does not accept any parameters. Return Value: This function returns an obj 1 min read PHP | CachingIterator rewind() Function The CachingIterator::rewind() function is an inbuilt function in PHP which is used to rewind the iterator. Syntax: void CachingIterator::rewind( void ) Parameters: This function does not accept any parameters. Return Value: This function does not return any value. Below programs illustrate the Cachi 1 min read Like