odbc_num_rows is not work - php

Question

$stmt is execute and give Result in Print_r($stmt). Result is this "Resource id #4" but when Print_r($stmt) is put in if (odbc_num_rows($stmt) > 0) {Print_r($stmt);}. it's not give Result. and gone else conditon give message else condition.so How to Put odbc function instead of odbc_num_rows($stmt).if right Parameter pass query execute and gone if condition.
which Odbc function used in if condtion.
<?php
include 'Connection.php';
if(isset($_REQUEST["insert"]))
{
$user = $_GET['user'];
$pwd = $_GET['pass'];
$yid = $_GET['yid'];
$sql = "select RegNo, UserName, Pasword from Std_Reg where UserName= '$user' and Pasword = '$pwd' and YearID = $yid and IsActive = True";
$stmt = odbc_exec($conn, $sql);
$result = array();
if (!empty($stmt)) {
// check for empty result
if (odbc_num_rows($stmt) > 0)
{
print_r($stmt);
$stmt1 = odbc_fetch_array($stmt);
$product = array();
$product['RegNo'] = $stmt1['RegNo'];
$product['UserName'] = $stmt1['UserName'];
$product['Pasword'] = $stmt1['Pasword'];
// success
$result["success"] = 1;
// user node
$result["product"] = array();
array_push($result["product"], $product);
// echoing JSON response
echo json_encode($result);
} else {
// no product found
$result["succes"] = 0;
$result["message"] = "No product found";
// echo no users JSON
echo json_encode($result);
}
//sqlsrv_free_stmt($stmt);
odbc_close($conn); //Close the connnection first
}
}
?>

Answer 1

For INSERT, UPDATE and DELETE statements odbc_num_rows() returns the number of rows affected. The manual says-
Using odbc_num_rows() to determine the number of rows available after a SELECT will return -1 with many drivers.
one way around this behaviour is to do a COUNT(*) in SQL instead. See here for an example.