Iterating PHP Iterators
Iterating PHP Iterators
About the Book
Looping over collections is something all programmers do. We keep writing the same code and building the same loops in project after project. PHP has us covered though. We don't have to continue to re-invent the loop, we can use the tools provided.
The Standard PHP Library (SPL) gives you the tools you need
An important part of the SPL is the collection of Iterator classes and interfaces. These bits of magic, like the rest of the SPL, will change the way you program. They are power tools in every PHP programmer's toolbox. Like other power tools, if used safely, they can make a difference in how you code, and how fast.
Iterators help you create better programs, "Iterating PHP Iterators" will help you create iterators
"Iterating PHP Iterators" will show you the basic of PHP's Iterators. You will see how to implement them in your own code, as well as use them to do eveyrthing form filtering input to stupid party tricks.
This is a great book for beginners and intermediate developers. It’s a comprehensive introduction to iterators and some of the implementations that ship with the SPL.
- Christopher Pitt (Iterating PHP Iterators Review)
Easy start for beginners, but enough meat for those who already use Iterators
- Mark (@Mark_Baker) Baker
#IteratingPHPIterators by @CalEvans is a great quick reference book if you use them regularly, or a good starter if you haven’t
- Ian (@icawebdesign) H.
Finished @CalEvans 'Iterating PHP Iterators'. Nice read. Should use them more often, especially to filter when looping.#php
- Stefan (@stefan_doorn) Doorn
"Iterating PHP Iterators" is part of the "Learn One Thing Books" series.
About the Author
Bundles that include this book
Table of Contents
- Dedication
-
Chapter 1 – The What and Why of Iterators
- What Are Iterators
- Iterators vs. Iterable Interface
- Why Use Iterators
- Why Not Just Use Arrays
- Two Kinds Of Iterators
- Source Code
- Summary
-
Chapter 2 - The Iterator Interface
- Why Not Just Use The Built-in Iterators
- Building Your Own Iterator
- The Countable Interface
- Summary
-
Chapter 3 - How Iterators Work
-
How An
IteratorOperates - Summary
-
How An
-
Chapter 4 - Outer Iterators
- Pre-made Outer Iterators
-
Creating An
OuterIterator - Summary
-
Chapter 5 - The ArrayIterator
-
ArrayObject -
ArrayIterator - Why Use An Iterator For An Array?
- Offsets
- Flags
- Summary
-
-
Chapter 6 - …Of Inputs And Outputs
- Modifying Output
- Restricting Inputs
- Summary
-
Chapter 7 - The SeekableIterator Interface
- Summary
- Bonus
-
Chapter 8 – Recursing The Iterator
- New Methods
-
RecursiveIteratorIterator - The Most Common Use Case
- Summary
-
Chapter 9 - Iterating The File System
-
DirectoryIterator -
FileSystemIterator -
RecursiveDirectoryIterator - Summary
-
-
Chapter 10 - The Caching Iterator
-
CachingIteratorAnd “Look Ahead” - Flags
- Summary
-
-
Chapter 11 - Generators
- What Are Generators?
- A More Complete Example
- Summary
-
Appendix A - A Bit Math Primer
- Starting Small
- Bigger And Better
- Summary
- NomadPHP
The Leanpub 60 Day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.
You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!
So, there's no reason not to click the Add to Cart button, is there?
See full terms...
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earnedover $14 millionwriting, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
