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Posted by tim.n.hunt on 05/06/06 01:56
Starbuck wrote:
> Hi,
>
> I would really appreciate some points of view about the best way of
> validating mandatory fields and redirecting them back to the page that will
> outline the text fields label (in red) to denote values that are missing
> without losing the information that the user has already keyed in. There is
> a lot out there about how to do this in java script, however, my client has
> requested no java script is to be used. I have included a sample of my code
> so far, and I would be grateful for any suggestions or changes that I should
> be making to the functionality or any other suggestions/criticisms.
>
> Thanks in advance...
>
> <?php
> // Check to verify that the form has been submitted
> if ($_POST['Submit'] == "Submit")
> {
> // $errmsg is a global variable to be used for storing error
> messages
> $errmsg = "";
> // check to see if the 'firstname' and 'lastname' string length is
> at least one char
> if ((strlen($_POST['firstname']) >= 1) &&
> (strlen($_POST['lastname']) >= 1))
> {
> $firstname = trim($_POST['firstname']);
> $lastname = trim($_POST['lastname']);
> $errmsg= NULL;
> }
> else
> {
> // 'firstname' and 'lastname' was not submitted
> $errmsg = '<SPAN class="Normal">You didn\'t fill out the required
> fields. Please go back!</SPAN>';
> }
> // check to see if we have any errors
> if (isset($errmsg))
> {
> // there was at least one error
> echo $errmsg;
> exit();
> }
> else
> {
> // No errors found, all data validated
> // Connect MYSQL
> MYSQL_QUERY("INSERT INTO table VALUES($firstname, $lastname");
> echo "Your information has been posted.";
> }
> }
> else
> {
> // Form wasn't posted, escape PHP and show the form
> echo "Go back to main form because form wasn\'t posted.";
> header("location: signup.php");
> exit();
> }
> ?>
This link might be useful, its an auto form filler which can can add an
error class to fields which were incorrrectly input by the user as well
as refilling a form with their previous input. Well worth a look.
http://www.onlamp.com/pub/a/php/2006/03/16/autofill-forms.html
Tim
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