如何从PHP访问数据库? [英] How can I access to database from PHP?

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问题描述

大家好



我试图从php访问数据库,但经过一些尝试后我无法支付

这是代码< br $>


  $ mysqli  =  new  mysqli(  ipAddress(hostname)  UserName 密码  DbName); 

if($ mysqli-> connect_error)
die(' 连接错误(' .mysqli_connect_errno()。' )' .mysqli_connect_error());

else echo 成功;





也是这个



  $ dbhandle  = mysql_connect(  ipAddress(hostname)  UserName  密码

die( 无法连接到MySQL);

// echo连接到MySQL< br>;

// 选择要使用的数据库
$ selected = mysql_select_db( DbName,$ dbhandle)
die( 无法选择数据库);





给我错误消息



访问被拒绝用户'UserName'@'ipAddress'(使用密码:YES)在../client.php







但是当我使用C#

没有错误消息



  string  query =  string  .Format( 从information_schema.tables中选择{0}  table_name); 
MySqlDataAdapter DA = new MySqlDataAdapter(query, Server = ipAddress; User Id = userName; Password = Password; Database = DbName);

DataSet Ds = new DataSet();
DA.Fill(Ds, );







plz帮帮我



我试过的:



我试图在php中使用许多不同的代码,但我无法访问数据库

解决方案

mysqli = new mysqli( ipAddress(hostname) UserName 密码 DBNAME);

if(


mysqli-> connect_error)
die(' 连接错误(' .mysqli_connect_errno()。' )' .mysqli_connect_error());

else echo 成功;





也是这个



  


dbhandle = mysql_connect( ipAddress(hostname) UserName 密码

die( 无法连接到MySQL);

// echo连接到MySQL< br>;

// 选择要使用的数据库

Hi Everyone

I tried to access to database from php but i couldn't after some attempts
this is the code

$mysqli = new mysqli("ipAddress(hostname)", "UserName", "Password", "DbName");

   if($mysqli->connect_error) 
     die('Connect Error (' . mysqli_connect_errno() . ') '. mysqli_connect_error());

   else echo "Success";



also this

$dbhandle = mysql_connect("ipAddress(hostname)", "UserName", "Password") 
		
		 or die("Unable to connect to MySQL");
		 
		//echo "Connected to MySQL<br>";

		//select a database to work with
		$selected = mysql_select_db("DbName",$dbhandle) 
		  or die("Could not select Database");



give me error messsage

Access denied for user 'UserName'@'ipAddress' (using password: YES) in ../client.php



but when I use C#
No Error Message

string query = string.Format("Select {0} from information_schema.tables ", "table_name");
            MySqlDataAdapter DA = new MySqlDataAdapter(query,"Server=ipAddress;User Id=userName;Password=Password;Database=DbName");

            DataSet Ds = new DataSet();
            DA.Fill(Ds, "Tables");




plz help me

What I have tried:

I tried to use many different codes in php but i couldn't to access database

解决方案

mysqli = new mysqli("ipAddress(hostname)", "UserName", "Password", "DbName"); if(


mysqli->connect_error) die('Connect Error (' . mysqli_connect_errno() . ') '. mysqli_connect_error()); else echo "Success";



also this


dbhandle = mysql_connect("ipAddress(hostname)", "UserName", "Password") or die("Unable to connect to MySQL"); //echo "Connected to MySQL<br>"; //select a database to work with


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