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  Tutorial: PHP Database Related Accessing a Database Using PHP/MySQL Tutorial

How to make a mysql connection, select a database, query the database, count the rows and use the information within the rows

Tutorial Details:

PHP/MySQL and Visual Basic

When you start using PHP more and more, you will start to notice that storing usernames and passwords in files etc is not an easy or quick thing to do, you need to open the file, and read the file.. okay.. thats easy enough.. but what about selecting datafrom within the file. Now thats a different story.
The idea is that it isn't very easy, and if you do find a way to do it.. its probably pretty damn CPU intensive.

*Cue Databases*
Databases come in different shapes and sizes, but when you need something powerful and cheap (by cheap I mean FREE BABY!), MySQL is most probably the best thing out there.

How to use MySQL Databases in applications
When we want to communicate with a MySQL database, we need to set up the connection to the server. This is done simply by providing the server address and the password (in that order) to the server.

PHP Code
$dbserver = "localhost" ; //almost always localhost
$dbuser = "mysql_username" ;
$dbpassword = "mysql_password" ;
$connect = mysql_connect ( $dbserver , $dbuser , $dbpassword );
?>
Before even starting to query the database, we need to select it!
PHP Code
$dbname = "my_database_name" ;
mysql_select_db ( $dbname );
?>

One of the main things that you are probably wondering is, "What on earth am I going to use databases for?".. well, checkout this example.

You are making a membership system for your website, your users are going to need to login. For this we need a table.


 

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PHP Database Related Accessing a Database Using PHP/MySQL Tutorial

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