PHP Tutorial

A web server programming language.

Chapter Quiz Exercises
Course Topics
PHP Intro PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Math PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP Form Handling PHP Date and Time PHP File Handling PHP Cookies PHP Sessions PHP Exceptions PHP OOP Classes & Objects PHP Constructor MySQL Connect MySQL Insert Data MySQL Select Data PHP JSON PHP Regular Expressions PHP Include & Require

PHP Regular Expressions

PHP Regular Expressions

A regular expression is a sequence of characters that forms a search pattern.

PHP uses PCRE (Perl Compatible Regular Expressions).

Common Functions:

  • preg_match() - Returns 1 if pattern was found in string, 0 if not
  • preg_match_all() - Returns the number of times pattern was found
  • preg_replace() - Returns a new string where matched patterns have been replaced

Try It Yourself

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Topics
PHP Intro PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Math PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP Form Handling PHP Date and Time PHP File Handling PHP Cookies PHP Sessions PHP Exceptions PHP OOP Classes & Objects PHP Constructor MySQL Connect MySQL Insert Data MySQL Select Data PHP JSON PHP Regular Expressions PHP Include & Require