Form Validation and Redirection

mohsini

Hi all

Im absolutely new to PHP. I have a problem in Form validations. I have a form in main php file called main.php. This form has 3 textfields - Name, city and Telephone. Now on the submit of the form I have given action="validate.php".

In this php file what it does is, it just checks if the Name is filled or not byt this command if ($_post[yourname])=='')

Now what I want is, if the name is empty then the page should go back to the main.php but all the other values which the user have put should be available in the text fields.

Plz help me how to do this.

Regards

mohsini

Hi all

In this php file what it does is, it just checks if the Name is filled or not byt this command if ($_post[yourname])=='')

Now what I want is, if the name is empty then the page should go back to the main.php but all the other values which the user have put should be available in the text fields.

Plz help me how to do this.

Regards

NogDog

I generally prefer to keep everything in one page. That way the $POST values are available if you need them to prefill form values. However, you can still have separate parts of the process in separate files, including/requiring them into the main script as needed, e.g.:

<?php
if(isset($_POST['some_field']))  // form was submitted
{
   require 'validate_form.php'; // assume this sets $valid to true/false
   if($valid)
   {
   require 'process_form.php';  // assume this sets $processed to true/false
      if($processed)
      {
         // go to success page
         header('Location: http://www.example.com/success.php');
         exit;
      }
      else
      {
         $message = "There was a problem processing the form....";
      }
   }
   else
   {
      $message = "All fields are required.";
   }
}
?>
<html>
<head><title>Example</title></head>
<body>
<?php
if(!empty($message))
{
   echo "<p class='error'>$message</p>\n";
}
?>
<form action="<?php echo $_SERVER['SCRIPT_NAME']; ?>" method="post">
<div>
<input type="text" name="some_field" value="<?php
if(!empty($_POST['some_field']))
{
   echo htmlentities($_POST['some_field'], ENT_QUOTES);
}
?>">
</div>
</form>
</body>
</html>

mikell

You could try something like this:

//validate.php

//get submitted values
$name = $_post['name'];
$city = $_post['city'];
$telephone = $_post['telephone'];

//redirect to form (including submitted data in the query string) if name is empty
if ($name == ''){
header('Location: yourscript.php?name='.$name.'&city='.$city.'telephone='.$telephone);
exit();
}

Then in the file with the form, you would set the form values based on
what is in the query string.

NogDog

Cross-posted threads merged....