I done a project. I write a following php script and create the mysql database.But I run the php file they show me error. What is the error

<?php
$con=mysql_connect("localhost","root");
if(!$con){
die('could not connect:'.mysql_error());
}

mysql_select_db("project",$con);

$sql="INSERT INTO customer(firstname)
VALUES ('$_POST[firstname]')";

if(!mysql_query($sql,$con));
{
die('Error.'.mysql_error());
}

echo"1 record added";
mysql_close($con)

?>

In the line:
Echo"1 record added";

Try adding a space between the word 'echo' and the quotation mark. If that's not it, please post the actual error message output by the PHP. If it doesn't set the error, try adding in:
Error_reporting(E_ALL);

So that it displays all errors.

The last line of your code reads:

Mysql_close($con)

It should read:

mysql_close($con);

You're close, just missing a semicolon is all :)