OverLord Shell

<?php session_start();
include("db/conn.php");

$regdistsrno="";
if(isset($_POST['regdistsrno']))$regdistsrno=$_POST['regdistsrno'];

 $cityq="SELECT a.regdistsrno,b.city FROM otms_mst_region_district a,otms_states_cities b WHERE a.citysrno=b.citysrno AND a.su_sr_no=1 AND a.regsrno='".$_POST['regsrno']."' ORDER BY b.city";
$cityr=$connection_jc->query($cityq);
?>
<option value="">Select</option>
<?php
while($cityrow=$cityr->fetch_assoc()){
?>
<option value="<?php echo $cityrow['regdistsrno']?>"<?php if($cityrow['regdistsrno']==$regdistsrno)echo " selected"?>><?php echo $cityrow['city']?></option>
<?php
}
$cityr->free();
$connection_jc->close();
?>