Invalid category outpu

Can someone see something wrong with this code?

I cannot get the output to spit out just the category name. Instead it spits out something like 0″value=”3

Here is the code and I hope someone can help me:

This is the code in the functions.php and below this is the form:

$cat = wp_dropdown_categories(‘orderby=id&order=ASC&hide_empty=0&echo=0’);
$cat = str_replace(“\n”, “”, $cat);
$cat = str_replace(“\t”, “”, $cat);
$cat = str_replace(“<select name=’cat’ id=’cat’ class=’postform’ ><option value=\””, “”, $cat);
$cat = str_replace(“</option><option value=\””, “_”, $cat);
$cat = str_replace(“\”>”, “-“, $cat);
$cat = str_replace(“</option></select>”, “”, $cat);

$cat = explode(“_”, $cat);
foreach($cat as $category)
{
$category = explode(“-“, $category);
$cat_number = $category[0];
$cat_name = $category[1];
update_option(“cat$cat_number”, $_POST[“cat$cat_number”]);
} //foreach
echo “<div id=\”message\” class=\”updated fade\”><p>Your settings have been saved.</p></div>”;
}

<label for=”postcats”>Category:<span>*</span></label>
<?php
$cats = wp_dropdown_categories(‘orderby=name&order=ASC&hide_empty=0&echo=0’);
$cats = str_replace(“\n”, “”, $cats);
$cats = str_replace(“\t”, “”, $cats);
$cats = str_replace(“<select name=’cat’ id=’cat’ class=’postform’ ><option value=\””, “”, $cats);
$cats = str_replace(“\”>”, “-“, $cats);
$cats = str_replace(“</option><option value=\””, “_”, $cats);
$cats = str_replace(“</option></select>”, “”, $cats);

echo “<select name=\”postcats\” id=\”postcats\”>\n”;
$cats = explode(“_”, $cats);
foreach ($cats as $catsss) {
$catsss = explode(“-“, $catsss);
$cat_id = $catsss[0];
$cat_name = $catsss[1];

echo “<option value=\”$cat_id\”>”;
echo $cat_name;
echo “</option>\n”;
}
echo “</select>”;

?>