$stmt = sqlsrv_query($conn, $query);

while($row = sqlsrv_fetch_array($stmt)) {
    echo $row[0];
    $var = $row["name"];
    //...
}

$stmt = sqlsrv_query($conn, $query);

while($obj = sqlsrv_fetch_object($stmt)) {
    echo $obj->field; // Object property names are the names of the fields from the query
    //...
}

$stmt = sqlsrv_query($conn, $query);

while(sqlsrv_fetch($stmt) === true) {
    $foo = sqlsrv_get_field($stmt, 0); //gets the first field -
}

sqlsrv_errors([int $errorsOrWarnings]);

$brokenQuery = "SELECT BadColumnName FROM Table_1";
$stmt = sqlsrv_query($conn, $brokenQuery);

if ($stmt === false) {
    if (($errors = sqlsrv_errors()) != null) {
        foreach ($errors as $error) {
            echo "SQLSTATE: ".$error['SQLSTATE']."<br />";
            echo "code: ".$error['code']."<br />";
            echo "message: ".$error['message']."<br />";
        }
    }
}

$dbServer = "localhost,1234"; //Name of the server/instance, including optional port number (default is 1433)
$dbName = "db001"; //Name of the database
$dbUser = "user"; //Name of the user
$dbPassword = "password"; //DB Password of that user

$connectionInfo = array(
    "Database" => $dbName, 
    "UID" => $dbUser,
    "PWD" => $dbPassword
);

$conn = sqlsrv_connect($dbServer, $connectionInfo);

$conn = new PDO("sqlsrv:Server=localhost,1234;Database=db001", $dbUser, $dbPassword);

//Create Connection
$conn = sqlsrv_connect($dbServer, $connectionInfo);

$query = "SELECT * FROM [table]"; 
$stmt = sqlsrv_query($conn, $query);

$query = "{call [dbo].[myStoredProcedure](?,?,?)}"; //Parameters '?' includes OUT parameters

$params = array(
    array($name, SQLSRV_PARAM_IN),
    array($age, SQLSRV_PARAM_IN),
    array($count, SQLSRV_PARAM_OUT, SQLSRV_PHPTYPE_INT) //$count must already be initialised
);

$result = sqlsrv_query($conn, $query, $params);

$conn = sqlsrv_connect($dbServer, $connectionInfo);

$query = "SELECT * FROM [users] WHERE [name] = ? AND [password] = ?";
$params = array("joebloggs", "pa55w0rd");

$stmt = sqlsrv_query($conn, $query, $params);

$cart = array(
    "apple" => 3,
    "banana" => 1,
    "chocolate" => 2
);

$query = "INSERT INTO [order_items]([item], [quantity]) VALUES(?,?)";
$params = array(&$item, &$qty); //Variables as parameters must be passed by reference

$stmt = sqlsrv_prepare($conn, $query, $params);

foreach($cart as $item => $qty){
    if(sqlsrv_execute($stmt) === FALSE) {
        die(print_r(sqlsrv_errors(), true));
    }
}