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The RecursiveIteratorIterator class Table of Contents ¶ RecursiveIteratorIterator::beginChildren — Begin children RecursiveIteratorIterator::beginIteration — Begin Iteration RecursiveIteratorIterator::callGetChildren — Get children RecursiveIteratorIterator::callHasChildren — Has children RecursiveIteratorIterator::__construct — Construct a RecursiveIteratorIterator ...
- OuterIterator
The OuterIterator interface Introduction ¶ Classes...
- RegexIterator
The RegexIterator class In case the difference between modes...
- GlobIterator
The GlobIterator class
- MultipleIterator
The MultipleIterator class Table of Contents ¶...
- RecursiveIterator
The RecursiveIterator interface Introduction ¶ Classes...
- RecursiveTreeIterator
The RecursiveTreeIterator class
- CallbackFilterIterator
The CallbackFilterIterator class
- FilterIterator
The FilterIterator class Introduction ¶ This abstract...
- OuterIterator
- Recursive and Non-Recursive Iterators
- RecursiveIteratorIterator
- IteratorIterator
- Summary
PHP has non-"recursive" iterators, such as ArrayIterator and FilesystemIterator. There are also "recursive" iterators such as the RecursiveArrayIterator and RecursiveDirectoryIterator. The latter have methods enabling them to be drilled down into, the former do not. When instances of these iterators are looped over on their own, even the recursive ...
This is where the RecursiveIteratorIterator comes in to play. It has the knowledge of how to call the "recursible" iterators in such a way as to drill down into the structure in a normal, flat, loop. It puts the recursive behaviour into action. It essentially does the work of stepping over each of the values in the iterator, looking to see if there...
The job of the IteratorIterator is to take any Traversable object, and wrap it such that it satisfies the Iteratorinterface. A use for this is to then be able to apply iterator-specific behaviour on the non-iterator object. To give a practical example, the DatePeriod class is Traversable but not an Iterator. As such, we can loop over its values wit...
RecursiveIteraratorIterator is for iterating over a RecursiveIterator("recursible" iterator), exploiting the recursive behaviour that is available. IteratorIterator is for applying Iterator behaviour to non-iterator, Traversableobjects.
Jun 5, 2024 · in this post we're going to over two features of php that help make recursion easier: the RecursiveIterator interface, which provides us with methods and features that make writing recursive functions easier, and the dreadfully-named RecursiveIteratorIterator class which we can use to flatten down arbitrarily-deep data structures.
RecursiveIteratorIterator::rewind — Rewind the iterator to the first element of the top level inner iterator RecursiveIteratorIterator::setMaxDepth — Set max depth
« RecursiveFilterIterator::hasChildren RecursiveIteratorIterator::beginChildren » PHP Manual Iterators The RecursiveIteratorIterator class
RecursiveIteratorIterator::nextElement — Next element RecursiveIteratorIterator::rewind — Rewind the iterator to the first element of the top level inner iterator RecursiveIteratorIterator::setMaxDepth — Set max depth RecursiveIteratorIterator::valid — Check whether the current position is valid
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Does PHP have a recursive iterator?
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How do recursive iterators work?
The RecursiveIterator interface Introduction ¶ Classes implementing RecursiveIterator can be used to iterate over iterators recursively.
