note 124944 added to class.cachingiterator

The only difference between CachingIterator and other Iterators such as ArrayIterator is the hasNext() method. Since the data will be loaded into the memory, the CachingIterator is able to check whether the given iterator has a next element. Let's demonstrate this by an example: <?php $iterator = new CachingIterator(new ArrayIterator(['C', 'C++', 'C#', 'PHP', 'Python', 'Go', 'Ruby'])); foreach ($iterator as $item) { if ($iterator->hasNext()) { echo $item.', '; } else { echo 'and '.$item; } } // C, C++, C#, PHP, Python, Go, and Ruby ?> In this example I check whether the iterator has a next value, if so, I append a comma otherwise "and" will be appended to the last element. ---- Server IP: 45.112.84.4 Probable Submitter: 185.85.3.195 (proxied: 109.57.54.31) ---- Manual Page -- http://php.net/manual/en/class.cachingiterator.php Edit -- https://master.php.net/note/edit/124944 Del: integrated -- https://master.php.net/note/delete/124944/integrated Del: useless -- https://master.php.net/note/delete/124944/useless Del: bad code -- https://master.php.net/note/delete/124944/bad+code Del: spam -- https://master.php.net/note/delete/124944/spam Del: non-english -- https://master.php.net/note/delete/124944/non-english Del: in docs -- https://master.php.net/note/delete/124944/in+docs Del: other reasons-- https://master.php.net/note/delete/124944 Reject -- https://master.php.net/note/reject/124944 Search -- https://master.php.net/manage/user-notes.php