Field Verification

[Anon]

I have two files: adduser.php and execute_adduser.php. adduser.php has a bunch of fields that collect information from the user. Then execute_adduser.php checks to make sure that the required fields were entered and if everything is ok it executes the INSERT INTO SQL Command.

My problem: If execute_adduser.php detects that one of the required fields were left empty, it will spit back a line that says "such and such field is required." I then have a javascript:history.go(-1) link to go to the previous page so the user can correct the problem. However, when they click the link, it goes back to the previous page but all the previously entered information is gone! How do I keep it there? It is a long form and a pain for a user to enter it all again.

Thanks!

[Anon]

Why check it on the second page when you can use javascript to do the work
before the form is submitted ??!!

[Anon]

Or even better if you want server side validation in case user has javascript turned off.

use this

if some error

use this code.

print '<form action="adduser.php3" method="post">';
while (list ($key, $val) = each ($HTTP_POST_VARS)) {
print '<input type="hidden" name="'. htmlspecialchars($key) .'" value="'. htmlspecialchars($val) .'">' ."\n";
}
print '<input type="submit" value="Go Back">';

And on your adduser.php3 set each fields value to the variable name. ie

<input type="text" name="firstname" value="<?php print $firstname; ?>">

I know this one works I have used it before

[Anon]

Thanks. This worked beautifully. I wanted to use Server-Side so my stuff is guaranteed to work. I want to be sure the data that gets entered is filtered properly. Thanks 🙂

[Anon]

The best of both world would be to use Javascript AND PHP to check the form information. That way if the user has javascript turned on, it will be faster and more efficient, however, if they don't, the PHP will back it up.

[Anon]

Hello.

I would like to force users to enter at least 10 characters into a specific field.

How might I do that? (non JS method, please)

Thanks Guys!

[Anon]

If you had a field called password that you wanted to be at least 10 chars

After they press submit on the page that processes your form, You would use

if (strlen($password) < 10) {
print "password field must contain at least 10 characters!";
}