ben bazı verileri silmek istiyorum:

    $dbc=mysql_connect(_SRV,_ACCID,_PWD) or die(_ERROR15.": ".mysql_error());
    $db=mysql_select_db("qdbase",$dbc) or die(_ERROR17.": ".mysql_error());

    switch(postVar('action')) {
              case 'changedata': 
 changedata(postVar('id'),postVar('chlotno'),postVar('chrange'),postVar('chS'),postVar('chA'),postVar('chB'),postVar('chC'),postVar('chstatus'));
                break;
        case 'deldata':
                deldata(postVar('delid'));
                break;
              }

    function changedata($id,$chlotno,$chrange,$chS,$chA,$chB,$chC,$chstatus){
        $ID = mysql_real_escape_string($id);
        $Lot_no = mysql_real_escape_string($chlotno);
        $Range = mysql_real_escape_string($chrange);
        $S = mysql_real_escape_string($chS);
        $A = mysql_real_escape_string($chA);
        $B = mysql_real_escape_string($chB);
        $C = mysql_real_escape_string($chC);
        $Status = mysql_real_escape_string($chstatus);
        $Lot_no=strtoupper($Lot_no);
        $Range=strtoupper($Range);

        $sql = "UPDATE inspection_report SET Lot_no = '".$Lot_no."', Range_sampling = '".$Range."', S = '".$S."', ";
        $sql.= "A = '".$A."', B = '".$B."', C = '".$C."', Status = '".$Status."' ";
        $sql.= "WHERE id = ".$ID;

echo $sql;
$result=mysql_query($sql) or die(_ERROR26.": ".mysql_error());
//echo $result;
mysql_close($dbc);
}
function deldata($id){
        $ID = mysql_real_escape_string($id);
        $sql = "DELETE FROM inspection_report WHERE id = '".$ID."'";

echo $sql;
$result=mysql_query($sql) or die(_ERROR26.": ".mysql_error());
//echo $result;
mysql_close($dbc);
}

I have not found any error message in this query and show "200,OK". But the data still exist (not deleted). why its happen? is there something wrong in my query?

echo $sql:DELETE FROM inspection_report WHERE id = ''