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[SOLVED] Error Handling & Verification: Return values back to form on error

jcstanley

By jcstanley
in PHP Coding Help

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jcstanley Member

jcstanley

Posted
Posted

Hi

 

I have a form 'event_form.php' with 2 fileds: Title and Description.

 

On submit the 'save.php' script is called which performs the following:

 

$title=$_POST['title'];
$description=$_POST['description'];


if (trim($title)=='' || strlen(trim($title)) < 1)
{ 
	echo '<body bgcolor="#FFFFFF">';
	echo '<p align="center" style="margin-top: 0; margin-bottom: 0">';
	echo '<b><font face="Tahoma" size="4" color="#FF0000">Incomplete Form</font></b></p>';
	echo '<center><p><b><font face="Tahoma" size="2" color="#FF0000">Please enter a Title</font></b></p>';
	echo '<center><p><font face="Tahoma" size="2" color="#000000"><a href=events_form.php>Try Again</a></font></P>';
	exit;
}

if (trim($description)=='' || strlen(trim($description)) < 1)
{ 
	echo '<body bgcolor="#FFFFFF">';
	echo '<p align="center" style="margin-top: 0; margin-bottom: 0">';
	echo '<b><font face="Tahoma" size="4" color="#FF0000">Incomplete Form</font></b></p>';
	echo '<center><p><b><font face="Tahoma" size="2" color="#FF0000">Please enter a Description</font></b></p>';
	echo '<center><p><font face="Tahoma" size="2" color="#000000"><a href=events_form.php>Try Again</a></font></P>';
	exit;
}

 

The problem is that if the user fills out the description field (which could be quite lengthy) but forgets to enter a title the error message will be displayed.  Once the 'Try Again' link is clicked the user is taken back to the form but will have to enter the description again.  Is there any way the decription value (and title value) can be passed back to the form?

 

Many thanks

hostfreak Regular Member

hostfreak

Posted
Posted

Store it in the session superglobal array:

$_SESSION['description'] = $_POST['description'];

 

Then inside your textarea tags on the "event_form.php" page, echo it:

<textarea><?php echo $_SESSION['description']; ?></textarea>

 

Then if you want, upon a successful submission, <a href="http://www.php.net/unset">unset()</a> it

Ingwar Newbie

Ingwar

Posted
Posted

Hi jcstanley  :)

I suggest that you use xajax for checking are title and description filled.

You can download it from http://www.xajaxproject.org, and it's very easy to use.

I can write you that code for tomorrow if you want :)

 

regards

 

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