Help with form

[Elfmuse]

Hi,

For one of my form entries I need the user to enter in exactly 12 variable/characters. How do I limit it so that if a user types in 11, 13 ect... that it prompts you to re-enter correctly as 12 variable/characters.

Also, since these numbers need to be unique how would you do a check if it is in the db already and prompt you for a different varibale/character set?

Elfmuse

[mark_W]

you can use the maxlength form attribute on the HTML side!

<input type="text" name="whatever" maxlength="12">

or you could check the length using php by using the strlen() function!

http://www.php.net/strlen

Mark.

[rightinpoint.com]

But you must know, that you must also do server side check
if(length($_POST["var"]) > 12)die("hack detected");
Becouse somebody may simulate post to your script (by editing form/creating fфлу request) and it may be dangerous(hack possibility)