$sql = "SELECT COUNT(u.url) AS total, u.SiteTypeID, p.SiteType FROM sites AS u LEFT JOIN sitetypes AS p USING (SiteTypeID) WHERE SiteTypeID=3";
$sq2 = mysqli_query($dbc, $sql);

$sq3 = "SELECT COUNT(u.url) AS total, u.SiteTypeID, p.SiteType FROM sites AS u LEFT JOIN sitetypes AS p USING (SiteTypeID) WHERE SiteTypeID=4";
$sq4 = mysqli_query($dbc, $sq3);

$sq5 = "SELECT COUNT(u.url) as total, u.SiteTypeID, p.SiteType FROM sites AS u LEFT JOIN sitetypes AS p USING (SiteTypeID) WHERE SiteTypeID=5";
$sq6 = mysqli_query($dbc, $sq5);


echo $row['url'] $row['SiteType'];
echo $row2['url'] $row2['SiteType'];
echo $row3['url'] $row3['SiteType'];

<?php

$sql = "SELECT COUNT(u.url) AS total, u.SiteTypeID, p.SiteType
        FROM sites AS u
        LEFT JOIN sitetypes AS p USING (SiteTypeID)
        WHERE SiteTypeID IN (3, 4, 5)
        GROUP BY u.SiteTypeID, p.SiteType";

if ($sql2 = mysqli_query($dbc, $sql))
{
    while ($row = mysqli_fetch_assoc($sql2))
    {
        echo $row["total"].." - ".$row["SiteTypeID"].." - ".$row["SiteType"]."<br >";
    }
}

?>