How to connect PHP with Database

How to connect PHP with Database : 

Here is basic syntax:
1mysql_connect(host name, user name, password)  


Mysql_connect() will get the correct value if it is succeed but false if it is fail. Example:

<?

//the example of MySQL database connection

//connect.php

$continued = mysql_connect("localhost","root","admin");

if ($continued) {

   echo ("Connection is succeed")

} else {

    echo ("Connection is fail")

}

?>