INSERT FUNCTION FOR PHP

INSERT FUNCTION FOR PHP

<?php
mysql_connect("localhost","root",""); //Connecton String (database,usename,password)
mysql_select_db("test1");
$query="INSERT INTO tablename ( `field_name`, `field_pass`, `field_address`) VALUES ( 'anurajs',' anu', 'address')";
mysql_query($query);
echo "value insert into database"
?>