// this is just an example, for this example i will use for domain tlds - this will add whatever is in the array to the drop down list for available // tlds

<?php

$tlds = array('com', 'net', 'org');

?>

<form action="<?php echo $PHP_SELF; ?>" method="post">
           www.<input type="text" name="domain" />&nbsp;.&nbsp;
	         <select name="tld">
                     <?php 
                        foreach ($tlds as $tld) {
                          echo "<option value='$tld'>$tld</option>";
                        } 
                     ?>
	  </select>&nbsp;&nbsp;&nbsp;

<input type="submit" name="check" value="Check" id="loading" class="button"/>&nbsp;&nbsp;&nbsp;
</form>