Real life use

<?php
if(!isset($_POST['submiting']) || !$_POST['link_to_use'] || !$_POST['full_name'] || !$_POST['email'] || !$_POST['reciprocal_url'])
    {
?>
    <form method='post' id='form'>
        <strong>Your link</strong>: write down the HTML with the link you want us to use.<br />
        <textarea name='link_to_use'><?php echo $_POST['link_to_use']; ?></textarea><br /><br />

        Your name is?<br />
        <input type="text" name='full_name' value="<?php echo $_POST['full_name']; ?>"/><br /><br />
        
        Email for important contact:<br />
        <input type="text" name='email' value="<?php echo $_POST['email']; ?>"/><br /><br />
        
        Your URL where <u>our link</u> have been placed:<br />
        <input type="text" name='reciprocal_url' value="<?php echo $_POST['reciprocal_url']; ?>"/><br /><br />
        
        <input type="submit" name='submiting' value="Submit link exchange request" class="button" />
    </form>
<?php
    }
else
    {
    include_once("exchangeLinks.class.php");
    #----------------------------------------------------------------------------------------------
    foreach ($_POST as $k=>$v){ $_POST[$k]=addslashes($v); }

    header("Content-type: text/xml"); 
    $exchangeLinks=new exchangeLinks($_POST);
    echo $exchangeLinks->sent_exchange_request();
    exit;
    }