$obj = new dbStudent();
echo $_GET['nHostelId'];
echo $_GET['nRoomId'];
// . "<script> alert( ".$_GET['nRoomId']." ) ; </script>";
echo $_GET['total'];
// echo "<script> alert( '".$bb."' ) ; </script>";
$conn = $obj->dbconnectModel();
/*$results = $newObj->getAllFromStudentRoomAllocation();	
$row = mysqli_fetch_assoc($results);*/
$updateAllocationQry = " UPDATE " . " tblstudentroomallocation " . " SET " . " isAllocated = 0 " . " WHERE " . " nHostelId = " . $_GET['nHostelId'] . " AND " . " nRoomId = " . $_GET['nRoomId'];
mysqli_query($conn, $updateAllocationQry);
$updateInStudent = "UPDATE " . " tblstudent " . " SET " . " bStaysAtHostel = 0 " . " WHERE " . " nGRNO IN ( " . " SELECT " . " nGRNO " . " FROM " . " tblstudentroomallocation " . " WHERE " . " isAllocated = 0 )";
mysqli_query($conn, $updateInStudent);
$iterator = 1;
while ($iterator <= $_GET['total']) {
    if ($obj->checkStudentExistence("tblstudentroomallocation", $_GET[$_GET['nRoomId'] . $iterator]) > 0) {
        ?>
				<script>
					alert( "in if=".$iterator ) ;

				</script>
			<?php 
        $updateAllocationQry = " UPDATE " . " tblstudentroomallocation  " . " SET " . " isAllocated = 1 " . " WHERE " . "nGRNO = " . $_GET[$_GET['nRoomId'] . $iterator];
        mysqli_query($conn, $updateAllocationQry);
        $updateInStudent = "UPDATE " . " tblstudent " . " SET " . "bStaysAtHostel = 1 " . " Where " . " nGRNO = " . $_GET[$_GET['nRoomId'] . $iterator];
        mysqli_query($conn, $updateInStudent);
    } else {
        echo $_GET['nHostelId'];
        echo $_GET['nRoomId'];
        echo $_GET[$_GET['nRoomId'] . $iterator];
        $insertQry = "INSERT INTO " . " tblstudentroomallocation " . " ( nHostelId, nRoomId, nGRNO, isAllocated) " . " VALUES ( " . $_GET['nHostelId'] . ", " . $_GET['nRoomId'] . ", " . $_GET[$_GET['nRoomId'] . $iterator] . ", " . " 1 " . " ) ";