- The InfiniteIterator class sounds like…a programmer's nightmare.…But the idea is to handle repetitive sequences…without the need to constantly rewind the iterator.…The simple way to prevent it from…running out of control is to…chain it with LimitIterator.…I've opened infinite.php which you can find…in the ch06 folder of the Exercise Files.…It contains an array with the days of the week.…A repeating pattern that we're all familiar with.…To use this with an iterator, we first need to…convert the array with ArrayIterator.…
So we'll use the same variable, days,…new ArrayIterator, and we pass it the array.…We can then chain this with InfiniteIterator.…If we were to use days in a foreach loop…without any further control,…it would keep running forever.…Or at least until the script…times out after 30 seconds.…We don't want that to happen, so we can restrict…the number of repetitions using LimitIterator.…Let's say today's Wednesday,…and we want to display the days of the coming week.…
So days, new LimitIterator.…We pass it our InfiniteIterator, days,…
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
Related Courses
-
Advanced PHP: Debugging Techniques
with Jon Peck1h 29m Intermediate -
PHP: Exporting Data to Files
with David Powers3h 42m Intermediate
-
Introduction
-
Welcome59s
-
-
1. Introducing the Standard PHP Library (SPL)
-
Introducing SPL iterators1m 59s
-
Using SPL iterators2m 6s
-
2. Exploring Files and Directories
-
3. Filtering Values
-
4. Array Iterators
-
Filtering values from JSON4m 45s
-
5. Combining and Merging Iterators
-
6. Other Iterators
-
7. SPL Data Structures
-
Using SplStack and SplQueue6m 25s
-
Understanding heaps2m 55s
-
Conclusion
-
Goodbye1m 37s
-
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.
CancelTake notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.
Share this video
Embed this video
Video: Creating a repeat sequence with InfiniteIterator