Yoshiyahu Yoshiyahu - 24 days ago 7
HTML Question

PHP header() redirect with POST variables

I'm working with PHP, and I'm making an action page which a form posts to. The page checks for errors, then if everything is fine, it redirects them to the page where the data has been posted. If not, I need to to redirect them back to the page they were at with an error and the POST variables. Here is the gist of how it works.

The HTML would look like this...

<form name="example" action="action.php" method="POST">
<input type="text" name="one">
<input type="text" name="two">
<input type="text" name="three">
<input type="submit" value="Submit!">
</form>


action.php would look like this...

if(error_check($_POST['one']) == true){
header('Location: form.php');
// Here is where I need the data to POST back to the form page.
} else {
// function to insert data into database
header('Location: posted.php');
}


In the case of an error, I need it to POST back to the first page.
I can't use GET, because the input will be too large.
I don't want to use SESSION, if possible.
Is this possible?

Answer

If you don't want to use sessions, the only thing you can do is POST to the same page. Which IMO is the best solution anyway.

// form.php

<?php

    if (!empty($_POST['submit'])) {
        // validate

        if ($allGood) {
            // put data into database or whatever needs to be done

            header('Location: nextpage.php');
            exit;
        }
    }

?>

<form action="form.php">
    <input name="foo" value="<?php if (!empty($_POST['foo'])) echo htmlentities($_POST['foo']); ?>">
    ...
</form>

This can be made more elegant, but you get the idea...