通过php显示sqlsrv中的所有数据库

$serverName = "serverName\instanceName";
$connectionOptions = array(
    "Database" => "dbName",
    "Uid" => "username",
    "PWD" => "password"
);

$conn = sqlsrv_connect($serverName, $connectionOptions);
if ($conn === false) {
    die(print_r(sqlsrv_errors(), true));
}

$query = "SELECT name FROM sys.databases";
$result = sqlsrv_query($conn, $query);

if ($result === false) {
    die(print_r(sqlsrv_errors(), true));
}

while ($row = sqlsrv_fetch_array($result, SQLSRV_FETCH_ASSOC)) {
    echo $row['name']."<br>";
}

sqlsrv_free_stmt($result);
sqlsrv_close($conn);