http://www.developer.com/lang/php/article.php/3885686/10-Easy-String-Manipulation-Solutions-for-Your-PHP-Development.htm
PHP's massive string manipulation library offers almost 100 native functions for dicing, splicing, parsing and searching text in every imaginable fashion. In fact, PHP has so many string manipulation options that determining the best approach for a particular string-related task can sometimes be difficult. In his PHPBuilder.com article, Jason Gilmore highlights the ideal PHP development solutions to the following 10 common string manipulation tasks.
10 Easy String Manipulation Solutions for Your PHP Development
June 2, 2010
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10 Easy Solutions for PHP String Manipulation