14.1. Perl Style

PHP provides two major interfaces for working with regular expressions. One of these interfaces supports Perl-style regular expressions. For many years Perl has been known as the big player in the regular expression business. Because many people like Perl's way of dealing with pattern matching, a set of functions has been implemented into PHP as well.

14.1.1. preg_match and Regular Expression Fundamentals

In this section, the preg_match function and regular expression fundamentals will be discussed, and you will take a closer look at the most important pattern modifiers. Pattern Modifiers

The first important function is called preg_match and it can be used to see whether a certain pattern can be found in a string. Let's ...

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