I keep getting this error, and i do not know much about PHP, but I would like to get started with it and with MySQL, but this error stops me from continueing with my learning!
Info
Server Program: Niginx
Installed Extras: PHP [5.6.4] | MySQL
Files:
<?php include "includes/config.php"; ?>
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" style+"text/css" href="css/main.css" />
<script type="text/javascript" language="javascript" src="javascript/main.js"></script>
</head>
<body>
</body>
</html>
config.php:
<?php
//connect to database
mysql_connect("localhost", "root", "") or die(mysql_error());
mysql_select_db("chat") or die(mysql_error());
echo "Working";
?>
I assume you are following an old tutorial on connecting to MySQL databases.
The library for commands beginning with mysql_ is deprecated. This that you shouldn't be using when writing code in php, as it will be "turned off" in the future. Take a look at the mysql_connect() command's documentation for more information.
Thankfully, there's a number of alternative ways for you to connect to a database, which aren't going to be turned off any time soon! The one I'd recommend in your situation for simplicity is the mysqli_ library. Looks pretty similar, right? You use it in a fairly similar way too, check the documentation for mysqli_connect().
Converting your mysql_ commands to mysqli_ is not hard, take a look at this answer for some more help.