The Snippets Thread

[Zach]

Here's one of the ones I find extremely useful when parsing user input. It's a regex function that takes all non-numeric characters out of a string. [source]

PHP Code:

preg_replace('/\D/', '', $string) 


Of course, you can replace the D with other regex strings, like [a-zA-Z] to remove all non alphabetic characters, or [a-zA-Z0-9] to remove all alphanumeric characters.