php使用sql server验证连接数据库的方法

<?php 
$serverName = "(local)"; 
$uid = &#39;xxxx&#39;; 
$pwd = &#39;xxxx&#39;; 
$connectionInfo = array( "UID"=>$uid, 
                         "PWD"=>$pwd, 
                         "Database"=>"AdventureWorks"); 
 
$conn = sqlsrv_connect( $serverName, $connectionInfo); 
if( $conn === false ) 
{ 
     echo "无法连接数据库."; 
     die( print_r( sqlsrv_errors(), true)); 
} 
 
$tsql = "SELECT CONVERT(varchar(32), SUSER_SNAME())"; 
$stmt = sqlsrv_query( $conn, $tsql); 
if( $stmt === false ) 
{ 
     echo "查询错误."; 
     die( print_r( sqlsrv_errors(), true)); 
}
 
$row = sqlsrv_fetch_array($stmt); 
echo "登录的用户: ".$row[0]; 
 
sqlsrv_free_stmt( $stmt); 
sqlsrv_close( $conn); 
?>