- The SPL iterator for multidimensional arrays…is called rather predictably, RecursiveArrayIterator.…To demonstrate how it works,…I've opened recursive_array.php, which you can find…in the Chapter Four folder of the exercise files.…It contains a multidimensional…associative array called, "Products."…So let's convert this into an Iterator.…We'll keep the same name, "products," "new,"…"RecursiveArrayIterator," and we pass it the array,…which is called, "products."…Because it's recursive, we need to use…RecursiveIteratorIterator, so "products," "new,"…"RecursiveIteratorIterator,"…and we pass it our "products" Iterator.…
And we're dealing with an associative array,…so we need both the parents and the children.…By default, RecursiveIteratorIterator…only gets the children, so we need…to reset the mode to SELF_FIRST.…So that's the second argument to RecursiveIteratorIterator.…It's a class constant, so…"RecursiveIteratorIterator," then SELF_FIRST.…So we can now use a foreach loop…to go over our RecursiveArray.…When we loop over the products iterator,…
Author
Released
10/22/2014- Using SPL iterators
- Inspecting directories
- Working with text files
- Exporting and extracting data
- Filtering data
- Converting between arrays and iterators
- Combining and merging iterators
- Creating a repeat sequence with InfiniteIterator
- Working with data structures
Skill Level Intermediate
Duration
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Introduction
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Welcome59s
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1. Introducing the Standard PHP Library (SPL)
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Introducing SPL iterators1m 59s
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Using SPL iterators2m 6s
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2. Exploring Files and Directories
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3. Filtering Values
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4. Array Iterators
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Filtering values from JSON4m 45s
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5. Combining and Merging Iterators
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6. Other Iterators
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7. SPL Data Structures
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Using SplStack and SplQueue6m 25s
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Understanding heaps2m 55s
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Conclusion
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Goodbye1m 37s
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Video: Using multidimensional arrays with iterators