preg_match input from a text field

Posted: Wed Nov 24, 2010 8:23 am

trying to use preg_match to validate input from a text field, just curious if there is an easier way to do what I was trying to accomplish. The field should contain no spaces; only letters, numbers, and hyphens.

this seems to work...

Code:

if(!preg_match('/[^0-9A-Za-z-]/',$test_string)) {


echo $test_string.' OK <br />';


}else{


echo 'error '.$test_string.'  <br />';}

output

Code:

username OK


error user_name


error user name


error $username


error username!


error username?


user-name OK

Posted: Wed Nov 24, 2010 10:00 am

I am not expert in regex, but that is basically what you want to do. I am not sure if you can tweak that or not.

registered · Posted: Fri Nov 26, 2010 11:05 am

That is about as simple as one can get. Looks good.