How to connect to database using PHP and MySQL

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<?php

$dbname="your db name";
$server="your server name e.g. localhost";
$username="your username e.g. root";
$password=" your password";

$connect = mysqli_connect($dbname,$server,$username,$password) or die(mysqli_error());

if($connect)
{

 echo "Database connection successfully..";
}else
{
echo "error while connecting  to the database";
}



?>

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