Problems with getting Tables from Databases using sqlsrv_query in php - php

Question

I am having problems with sqlsrv_query in PHP. I get the following warning:
Warning: sqlsrv_query() expects parameter 1 to be resource, null given in C:\xampp\htdocs\Status.php on line 76
Notice: Array to string conversion in C:\xampp\htdocs\Status.php on line 76
A error occured: Array
This is my code:
<?php
$conn = OpenConnectionMsSQL();
#var_dump($conn);
$sql_select = "Select state_desc from sys.databases";
$params = array();
$query = sqlsrv_query($conn, $sql_select, $params) or die('A error occured:' . sqlsrv_errors());
$res = sqlsrv_num_rows($query);
while($row = sqlsrv_fetch_assoc($res))
{ echo ($row['state_desc']); }
?>
and this is my connection code:
<?php
function OpenConnectionMsSQL()
{
try{
$serverName = "***";
$database = "***";
$uid = "***";
$pwd = "***";
$connectionOptions = array("Database"=>"$database","Uid"=>"$uid","PWD"=>"$pwd");
$conn = sqlsrv_connect($serverName, $connectionOptions);
if($conn == false)
die( print_r( sqlsrv_errors(), true));
}
catch(Exception $e)
{
exit("<h1>"."Verbindung fehlgeschlagen!". "</br>". "Server Stopped"."</h1>");#.$e->getMessage());
exit("<!--"."<h1>"."Serverstatus: Verbindung fehlgeschlagen!". "</br>". "Server Stopped"."</h1>"."-->");#.$e->getMessage();
}
}
?>
How do I fetch my results correctly?

Answer 1

I just forgot to use sql_fetch_array, so I couldn't fetch my results.
The following snippet fixes the problem
$sql_select = "Select state_desc,name from sys.databases where name='master'";
$sql_version = "Select ##version as Version";
$stmt = sqlsrv_query($conn, $sql_select) or die('A error occured: ' . print_r( sqlsrv_errors(), true));
$version = sqlsrv_query($conn, $sql_version) or die('A error occured: ' . print_r( sqlsrv_errors(), true));
if (sqlsrv_has_rows($version)) {
$data2 = sqlsrv_fetch_array( $version, SQLSRV_FETCH_ASSOC);
echo "Serverinfo: ".$data2['Version']."<br/>"."<br/>";
} else {
echo "No data found";
}