Question

I have an assignment for school: I need to make a user database.

First I need to know how to get information from tables in my database.
Then I need to write usernames to the database.

Let’s start with the first one:

I am working with MAMP.
I got this sample from my teacher, I added some echos in there.

< ?php

$dbhost  = 'localhost';    // Unlikely to require changing
$dbname  = 'chrisdb';        // Modify these...
$dbuser  = 'root';        // ...variables according
$dbpass  = 'root';        // ...to your installation

$db_server=mysql_connect($dbhost, $dbuser, $dbpass) or die(mysql_error());
echo("1");
if (!$db_server) die("Unable to connect to MySQL: " . mysql_error());
echo("2");
mysql_select_db($dbname)
    or die("Unable to select database: " . mysql_error());
echo("3");

?>

All the echos gets printed. Does that mean I have access to the server?
How do I access a table in the db and get the value of it?

And how do I write to the database?

I am not in search for the best possible code, more like the simplest possible code.
I appreciate all help you can give me. If you do help, will you please explain what your code means?

Answer 1

You write to the database by sending an INSERT statement and read using a SELECT statement. See the documentation

I personally hate W3Schools, but this article will get you started on how to insert data into a database.

You should note that mysql_ functions are being deprecated and you should use mysqli_ or PDO instead.