CHAPTER 9Strings and Regular Expressions
Programmers build applications that are based on established rules regarding the classification, parsing, storage, and display of information, whether that information consists of gourmet recipes, store sales receipts, poetry, or some other collection of data. This chapter introduces many of the PHP functions that you'll undoubtedly use on a regular basis when performing such tasks.
This chapter covers the following topics:
- Regular expressions: A brief introduction to regular expressions touches upon the features and syntax of PHP's two supported regular expression implementations: POSIX and Perl. Following that is a complete introduction to PHP's respective function libraries.
- String manipulation:
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