PHP sqlsrv_fetch_array problem && sqlsrv_num_rows -1 - php

Question

a new webserver has been stood up for me. It is Ubuntu 20.04 and has PHP 7.4.3 on it. I am working with MS SQL Server 2012. I can send my SQL query to the DB server and see it in SQL Server Profiler. I can copy it from the profiler and it runs fine in SQL Management Studio but, I am having a problem when I try to echo the results to my page. When I use sqlsrv_num_rows I get -1. Could I get a hand please?
<?php
if(isset($_POST['getPassBtn'])){
#DATABASE LOGIN
include './php/inc/dbLogin/mydb.php';
#FORM POST VARIABLES
$badge = $_POST['empId'];
//$badge = (int)$badge;
#check badge entry for paramiters
if($badge == '' || $badge < 10000 || $badge > 30000){
echo '<br/> ERROR : Invalid Badge Number <br/>';
die();
}
$sql = "USE mydb SET NOCOUNT ON SELECT badgeNumber, userPassword FROM dbo.users WHERE badgeNumber = '$badge' ORDER BY badgeNumber ASC --getTestData.php";
//$sql = "USE toolsMeskwaki SELECT * FROM bingoProgressive.users ORDER BY badgeNumber ASC --getTestData.php";
$params = array();
$options = array( 'Scrollable' => 'buffered');
$stmt = sqlsrv_query( $conn, $sql, $params, $options);
#check if query returns false
if( $stmt === false ) {
die( print_r( sqlsrv_errors(), true));
}else{
echo '<br/> Query sent to SQL Server <br/>';
}
/*
$row_count = sqlsrv_num_rows( $stmt );
if ($row_count === false){
echo "Error in retrieveing row count.";
}else{
echo $row_count;
}
*/
#Fetching Data by array
while($row = sqlsrv_fetch_array($stmt)){
echo 'badgeNumber '.$row['badgeNumber'];
echo 'userPassword '.$row['userPassword'];
}
#release query
sqlsrv_free_stmt($stmt);
#CLOSE DATA BASE CONNECTION
sqlsrv_close($conn);
echo "<br/> SQL Server Connection closed.<br />";
}else{
echo '<br/> click GET btn to connect SQL Server <br/>';
}
?>

Answer 1

You're submitting three different statements:
USE mydb
SET NOCOUNT ON
SELECT badgeNumber, userPassword FROM dbo.users WHERE badgeNumber = '$badge' ORDER BY badgeNumber ASC
It works in SQL Management Studio for two reasons:
Auto-magic statement detection, although deprecated for several years (you're now expected to use ; as delimiter), is still supported.
The query tool is specifically designed to run several statements at once.
We know that sqlsrv_query() supports it because it isn't returning false. But, given that you're running three statements, you need you use sqlsrv_next_result() twice to move to the third result set.
On a side note:
You can use sqlsrv_connect() to provide the initial database. You only need to switch DBs if you use several of them and you don't want to add the name as mydb.dbo.users.
SQLSRV supports prepared statements (see sqlsrv_prepare() and sqlsrv_execute()).