Not getting anything back from sqlsrv_num_rows - php

Question

I'm trying pull back data from MS SQL via a php page. I have got a valid connection, and am trying a simple SELECT * FROM MyTable but sqlsrv_num_rows is just blank no matter what I do!!!
Here is my code:
function connect() {
$serverName = DB_HOST; //serverName\instanceName
$connectionInfo = array( "Database"=>DB_NAME, "UID"=>DB_USER, "PWD"=>DB_PASSWORD);
$this->connection = sqlsrv_connect( $serverName, $connectionInfo);
sqlsrv_connect( $serverName, $connectionInfo);
if( $this->connection ) {
echo "<br>Connection established.<br />";
}else{
echo "<br>Connection could not be established.<br />";
die( print_r( sqlsrv_errors(), true));
}
}
The echo for Connection established is working so all AOK there!
Now when I do a simple query:
function query($sql) {
if ($this->debug) {
echo $sql . "<br />";
}
$this->sql = $sql;
$this->recordset = sqlsrv_query($this->connection, $sql);
if (!$this->recordset) {
die('<br><br>Invalid query :<br><br><bold>' . $this->sql . '</bold><br><br>' . sqlsrv_errors());
}
echo "<br>rows = " . sqlsrv_num_rows($this->recordset);
I get absolutely nothing from the above echo? Any reason why? Or can you suggest a new echo I can try to debug this?
All my code in my DB class is converted from mysql so there may be a few bits wrong that is doing the damage!
I've even tried a super simple version, all the code together and it's still blank/false:
$server = DB_HOST;
$conn = sqlsrv_connect( $server, array( "Database"=>DB_NAME, "UID"=>DB_USER, "PWD"=>DB_PASSWORD) );
$stmt = sqlsrv_query( $conn, "SELECT * FROM MyTable");
$row_count = sqlsrv_num_rows($stmt);
echo "<br>row count = " . $row_count;
if ($row_count === false)
echo "\nerror\n";
else if ($row_count >=0)
echo "\n$row_count\n";
die;

Answer 1

Try this.....
Replace below statement
sqlsrv_query( $conn, "SELECT * FROM MyTable");
as
sqlsrv_query( $conn, "SELECT * FROM MyTable", array(), array("Scrollable"=>"buffered"));