How to connect to Mysql server using Php.

Given below is the code for connecting to mysql using php.

<?php

$hostname = "localhost"; // hostname 
$username = "root"; // username )
$password = ""; // password 
$database = ""; // Database name (For example: test)

$db = mysql_connect($hostname, $username, $password);
mysql_select_db($database, $db) or die("Unable to select database.");;

if(!$db){
echo "Connecting to the mysql server failed";
}else{
echo "Connected successfully";
}

?>

The output of the above code will be: