- I've got open limit.php, which loads courses.xml…in the common data directory as simple XML and then…displays the title, author and duration of each course.…You can find a copy of this file in the chapter three folder…of the exercise files.…If we load this page into a browser,…the details of all the courses are displayed.…But let's say we want only the first 10.…We can do that with limit iterator.…So let's get back to the code.…
And the first thing that we need to do…is to convert the simple XML element object…into an iterator by adding the name of the…simple XML iterator class as the second argument…to simple XML load file.…So let's add that second argument in there.…It needs to be a string, SimpleXMLIterator.…And this is case insensitive.…Now that we've converted it into an iterator,…we can chain it with the limit iterator.…
So let's add a new line on line three.…We'll keep the same name, courses,…and then it's new LimitInterator.…The first argument is the iterator we want to limit.…That's our courses.…The second argument is where you want to begin,…
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
Views
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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: Specifying a range of items with LimitIterator