echo '<select name="cat" id="cat">';
$sorgu=mysql_query("SELECT * FROM wp_terms WHERE term_id IN (SELECT term_id FROM wp_term_taxonomy WHERE taxonomy = 'category') ORDER BY name");
while($veri = mysql_fetch_array($sorgu)){
	echo "<option value=".$veri['term_id'].">".$veri['name']."</option>";
}
echo '</select>';

include 'wp-blog-header.php';
$categories = get_categories("'orderby' => 'name','order' => 'ASC'");
foreach($categories as $category) {
	echo $category->term_id. '-' . $category->name.'<br />';
}