[kayson]

What's the best way to work with variables passed by forms? I've been using $_REQUEST, but the problem I keep running into is if the variable is undefined, I get a notice that the index is undefined. It's because I use one page for everything. So I have index.php with a form that posts to index.php. If I have $_REQUEST["name"], for example, from a text box, it will work fine if the form has been submitted, but the first time the page is viewed I get an error. Thanks!

[jdf_warrior]

The easiest thing to do would be to use the isset() function to determine if the there was a value passed through the form. It is a bool function so just throw it in an if statement and check to determine if there was anything posted through the form. Otherwise, dont do anything.

You could always just submit to somewhere other than index.php too. Submit your form to another script and then dependent upon the result, redirect back to index.php or somewhere else.

[petteyg359]

form.php

Code:

<form action="form.php" method="post">
Name:<input type="text" name="formdotphp_name" />
Favorite Color:<input type="select" name="formdotphp_color">
<option value="red">Red</option>
<option value="blue">Blue</option>
</input>
<input type="submit" name="formdotphp_submit" value="1" />
</form>
<?php
if ($_POST['submit']) {
echo "<br />Form submitted:<br />";
echo $_POST['formdotphp_name']."'s favorite color is ";
echo $_POST['formdotphp_color'].".";
}
?>

Better to use your specific globals rather than $_REQUEST, IMHO.