How do you validate form data using php? I currently use javascript but users can turn that off. For example I want to make sure a user completes a field (does not leave it blank) before the form is submitted to a cgi script for action.

Any ideas (or code snippets) are appreciated!

why not edit your cgi script to validate it??

Originally posted by kunal
why not edit your cgi script to validate it??

That is something I haven't thought of but I don't know how to do it and I think that using PHP to validate the form itself before passing the data off to the cgi script would be easier. The form passes data to a cgi script that searches a database. Also I have other forms that I would like to validate the data for and they use different scripts so I guess that's why I am searching for some general code to use with forms to make sure that the user completes the fields.

Ideally I could specify a minimum number of characters, but if I can't do that, I would like to make sure they are not left blank.

Thanks for your reply!