[RESOLVED] Form processing and validation

meigwil

Hi,

I'm in the middle of building a simple form.

When I learnt ASP, there was a built in redirect function (response.redirect I think). I could therefore send the form to a validation script, which could either redirect back to the form if there was an error, or to a processing script.

Is there a similar function I could use in PHP? Or a different process?

I have looked in the manual, but with no luck.

Thanks,

Mei

Houdini

The action of a form is what tells the form how it is handled for example

<form name = "testform" action = "process.php" method ="post">

In the above line only action and method are absolutely necessary, the action will when the submit button of the form is pressed will look in the current directory for the file process.php where you will do any validattion and or verification.

meigwil

Thanks for your reply.

What I mean is that the form was sent to a verification script, which would check for errors.

At the end of this script, it would redirect either back to the form or to the processing script, for the data to be added to the database etc.

<%   // (asp)

// Check for errors, then

if (errors > 0) {
    //redirect back to form.asp?msg=Error%20Message
} else {
    //redirect to processing.asp
}
%>

As I said, I'm sure it was response.redirect(url) that I used.

Is there anything similar in PHP?

Thanks,

Mei

bodzan

[man]header("Location:URL");[/man]?

meigwil

I've tried to use that function but had the error message 'Headers have already been sent'.

Would it be possible to use it in this kind of situation?

Mei

bodzan

...to have ANY output to the browser before using header function not even a blank line in the script...

If you have to output anything before calling header() I would suggest you use some of the output control functons...

Houdini

You could use this code

echo "<script type=\"text/javascript\">window.location=\"somefile.php\"</script>";

The reason you can't use a header() function is because there has already been output to the browser, the header must be the first output to work.
Or you could just use an <a href="somthing.php">Link Here</a> in case of javascript or java disabled.

To get around the header() problem and still use it write your code in the processing form so that it validates or verifies the form first, if that fails then you can use the header().

meigwil

Thanks for your help.

I'm going to have to brush up some more on my php!

Mei