Hour 18. Working with Regular Expressions
What You’ll Learn in This Hour:
How to match patterns in strings using regular expressions
The basics of regular expression syntax
How to replace text in strings using regular expressions
How to use regular expressions to split a string into an array
Regular expressions are a powerful way of examining and modifying text. They enable you to search for patterns within a string, extracting matches flexibly and precisely. Be warned that because they are more powerful, they are also slower than the more basic string function examined in Hour 8, “Working with Strings.” You should use string functions, therefore, if you don’t need the extra power afforded by the use of a regular expression function.
PHP supports ...
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