Need a function to impelement preg_replace on from posts

["thewizard_it" <thewizard_it@xxxxxxxxx>]

Hello
I need to implement preg_replace on an array of values posted from a 
post, i need to clean every value posted from the form with 
preg_replace, I need to apply a function which preg_replaceS these 
values
thewizard_it@xxxxxxxxx