我使用哪个用户名/密码连接到mySQL

Question

So, I'm SUPER new to mySQL. Having issues connecting to my database with PHP. Hoping someone can point me in the right direction.

I can login to our Cpanel using my username/password. Using the web gui I was able to create a database.

Now when I try to connect to the database (or even just the server for that matter) using PHP I get an error:

Warning: mysqli::__construct(): (HY000/1045): Access denied for user 'username'@'servername' (using password: YES) in /home/ropepart/public_html/techportal/sandbox/mysqltest.php on line 8 Connection failed: Access denied for user 'username'@'servername' (using password: YES)

To me, it seems like this is a username/password error. But I an using the same username/password that I use to login to the web gui. Why can I successfully login there, but can't login with PHP?

Here's my code (taken pretty much directly from W3Schools):

<?php
$servername = "servername";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
?>

(Hopefully it's obvious that I've changed my servername/username/password for the purposes of this post)

Answer 1

Check the details correctly, By deafult
host = localhost
username = root
password = (No password leave it as empty)
database = (your database)

<?php 

$connection = new mysqli('host','username','password','your_database');

if($connection->connect_error || $connection->error){

echo "error";

}else{

echo "done";

}

?>

Answer 2

you should add database name.

 <?php
 $servername = "localhost";
 $username = "root";
 $password = "";
 $dbname = "demo"

 // Create connection
 $conn = new mysqli($servername, $username, $password,$dbname);

 // Check connection
  if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
  } 
  echo "Connected successfully";
  ?>

//if you are using xampp you shoul locate this file you get information from this passwords.txt

Answer 3

MySQL database username/password is not necessarily same as cPanel username & password.

Here is what you should do:

1. Login to your cPanel
2. From dashboard click "MySQL® Databases"
3. Add a new user from there ( https://prnt.sc/kpiby9 ). Just fill username and password (note down the password).
4. Add that user with your database by selecting both from the dropdown ( https://prnt.sc/kpidqx )
5. Now, use this username & password to connect with the database.

mysqli_connect(serverhostname,username,password,dbname);