2 or 3 Checkboxes in MySQL query - mysql

Question

I created the following SQL Query, which works fine. However, I want to add 2 other checkbox $Post's from another label. Now I'm a little bit without any idea how I can add it. Do I have to add an "AND" between the tbs queries?
Here is the code
include "db_connect.inc.php";
$sql = "SELECT * FROM profiles";
$sql .= " WHERE profilename = '". $_POST["profilename"] ."' ";
$sql .= " AND ort = '". $_POST["ort"] ."' ";
$sql .= "AND jahren = '" . $_POST["alter"] . "' ";
$tbs = array();
foreach( array( 'tb1', 'tb2', 'tb3' ) as $tb_key )
{
if ( empty( $_POST[$tb_key] ) ) continue;
$tbs[] = "`grosse` LIKE '" . $_POST[$tb_key] . "'";
}
if ( !empty( $tbs ) )
{
$sql .= ' AND ( ' . implode( ' OR ', $tbs ) . ' )';
}
$tbs = array();
foreach( array( 'tb4', 'tb5', 'tb6', 'tb7' ) as $tb_key )
{
if ( empty( $_POST[$tb_key] ) ) continue;
$tbs[] = "`haare` LIKE '" . $_POST[$tb_key] . "'";
}
if ( !empty( $tbs ) )
{
$sql .= ' AND ( ' . implode( ' OR ', $tbs ) . ' )';
}
$res = mysqli_query($con, $sql);
$num = mysqli_num_rows($res);
if ($num==0) echo "Kein Profil gefunden";
echo "<table border='1'>";
echo "<tr><td>Profile</td><td>Alter</td>";
echo "<td>Ort</td><td>Brustgrösse</td>";
echo "<td>Haarfarbe</td></tr>";
while ($dsatz = mysqli_fetch_assoc($res))
{
echo "<tr>";
echo "<td>" . $dsatz["profilename"] . "</td>";
echo "<td>" .$dsatz["jahren"] . "</td>";
echo "<td>" .$dsatz["ort"] . "</td>";
echo "<td>" .$dsatz["grosse"] . "</td>";
echo "<td>" .$dsatz["haare"] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);

Answer 1

i could it resolve it. I had a wrong entry in the DB. The query works fine!