Iterating Multibyte Strings

Learn how to iterate multibyte strings in PHP with the help of practical examples.

UTF-8 string iterator implementation contains the full implementation for the class we will develop throughout this chapter.

Issues with multibyte iteration

In the previous lesson, we implemented several string functions that worked by iterating a string’s characters. Treating each byte as a single character is fine when working with ASCII, but as soon as we need to work with multibyte characters, things become a little more complicated. As an example, if we attempted to iterate “這可以” using the following. After pressing the “Run” button, the output can be viewed by clicking the app link under the “Run” button

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