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DevShed:
The preg_replace_callback() function in PHP
September 10, 2008 @ 11:19:07

DevShed has a new article posted today spotlighting the preg_replace_callback function and how it compares to a normal preg_replace call in some everyday situations.

The preg_replace_callback() function is an under-utilized and little documented PHP function that you will find useful and powerful in many situations, especially if you have been actively using preg_match() and preg_replace(). In this article, you will find a clear explanation of what this function does, together with carefully crafted examples that illustrate some of its uses.

They show how to use it in a few different situations - inside conditional statements, for loops, in a sequence and inside of a class to manipulate matched strings with external functions (both native to PHP and user-defined).

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