Limiting characters in a string

[Anon]

Hi! 😃

Sorry if someone's already mentioned this but i couldnt find anything in the forum 🙁

I was wondering if there is a function in PHP that lets you parse a string, and return a string with ONLY specified characters.. eg:

This string:
"!bob the b(_)ilder"

will be converted to this string

"bobthebilder"

so it will remove any characters that arent
in the range of A-Z 1-9 etc.

obviously the returned string isnt spelled right or anything, but im trying to make it that you can only have specified characters in the string 😃

If I were to create the function I would make it check the ASCII index and if its within specified range.

thanks!

[Anon]

With my ... Eyes Closed ...

$string=preg_replace('/[^{a-zA-Z0-9]/','',$string);}

That's if you want to replace stuff. If you just wanna see if there's bad stuff in there (make up your mind)

if(preg_match('/[^{a-zA-Z0-9]/',$string))}

P.O.P.