Special Characters

Is there a PHP function that searches for only special chars?

[d40sithui]

~`!@#$%^&*()_-+=\][{}¦:;"'?/>.<,

does anyone know of a function in PHP (if any) that finds only special characters?

-khanh

[cmarshall]

~`!@#$%^&*()_-+=\][{}¦:;"'?/>.<,

does anyone know of a function in PHP (if any) that finds only special characters?

preg_match [us3.php.net] ( "/~`!@#$%^&*()_-+=\\][{}¦:;"'?\/>.<,/", $string ); (Note the additional backslashes -actually, you'll need more than them. There's all kinds of special regex characters in there. Use preg_quote [us3.php.net] to scrub the regex.)

So it might look like

preg_match("/".preg_quote("~`!@#$%^&*()_-+=\\][{}¦:;\"'?/>.<,","/")."/", $string);

[mcibor]

I would use negation query:

preg_match ( "@[^a-z0-9 ]+@i", $string );

It will also find line breaks

[henry0]

As mcibor shows it is better to check for what's allowed than the reverse

you will have no problem at selecting what you agree to get and might very often forget a few items to disallow.

[d40sithui]

thanks for the help guys!

-khanh