<?php
ob_start();
$host="localhost";
$username="SQL_USER";
$password="SQL_PASS";
$db_name="test";
$tbl_name="members";

mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

$myusername=$_POST['myusername'];

$myusername = stripslashes($myusername);
$myusername = mysql_real_escape_string($myusername);


$sql="SELECT * FROM $tbl_name WHERE username='$myusername'";
$result=mysql_query($sql);

$count=mysql_num_rows($result);


if($count==1){
echo "Success!";
}
else {
echo "Wrong Username or Password";
}

ob_end_flush();
?>