php form validating...

bobob

Hi,

I'm new to PHP and I am trying to figure out how to make all of my contact us form all mandatory. At the moment it is just the email address that get validated. Is it possible to get all the fields validated? :bemused: :o

(MOD: Unnecessary external links removed)

Thank you very much for any help in advance, it is greatly appreciated 🙂

elibizif

This is from the contact form at my website, which also uses captcha (imgverify). Hope this helps.

 <input type="hidden" name="required" value="email:Email,realname:Name,subject:Subject,imgverify:imgverify" />

roscor

there is a selection of form validation you can use such as eregi and preg match which can validate the info submitted via a form. You also need to consider mysql escape string for secuity against sql injection. Security is such a massive issue and should be your main priority when designing a script.

One such email validation checker I have used is

if(preg_match('/^[\w]+[-\w._]*@[\w]+[-\w]+(\.[\w]+[-\w]+)*\.[\w]{2,6}$/ ', $_POST['email']))

this checks the correct syntax of the form submitted email address.

A further example is checks if the username has characters lowercase or uppercase plus numerical characters, or you can initiate an error, there are many out there

 if(preg_match('/^[a-zA-Z0-9_-]{4,}$/i', $_POST['username'])){

.
See (regex) php cheat sheet for some guidance.

Horizon88

What do you mean by validated? What sort of fields are you checking? Name, phone number, etc? If you're just matching that they fit a pattern - say for a phone number, 10 digits seperated by hyphens, then regular expressions come in very handy.