连接到db时出错

Question

I have started using PDO in php for the first time.

Here is my code:

$host="localhost";
$dbname="meme";
$user="root";
$pass="dream";

global $dbh;
try 
{ 
    //dbh : Database Handle  
    $dbh= new PDO("mysql:host=$host;dbname=$dbname,$user,$pass");  
}  
catch(PDOException $e)
{  
    echo $e->getMessage();  
}

I got this error:

SQLSTATE[28000] [1045] Access denied for user 'www-data'@'localhost'
(using password: NO)

I guess its a common error as I could get a number of related posts on both Google and StackOverflow but I fail to correct it maybe because of my limited knowledge in the field. Any help is appreciated.

Answer 1

Use this instead:

$dbh= new PDO("mysql:host=$host;dbname=$dbname",$user,$pass);

You have quoted the DSN, username, and password altogether. This way those 3 parameters are actually only one parameter. Therefore from PDO' constructors POV, you are not passing username, and password.