Antonio Ciccarone » Code

Connect to MySQL Function

Antonio Ciccarone — Wed, 16 Jun 2010 21:27:21 +0000

This is how I connect to a MySQL database. The following code is based off of three or four separate php files but could insecurely be combined into one. We’ll be creating functions.php which holds all of the code that the site uses, settings.php which holds the configurable options and a connection.php that connects to the database. The fourth and obviously optional file is your index.php (or wherever you’re connecting from)

First, in functions.php we’ll define our connectSQL. It takes four arguments and connects or returns an error if unsuccessful

^?View Code LANGUAGE

function connectSQL($server, $user, $pass, $name) {
	define("DB_SERVER", $server);define("DB_USER", $user);define("DB_PASS", $pass);define("DB_NAME", $name);
	$connection = mysql_connect(DB_SERVER,DB_USER,DB_PASS);
	if (!$connection) {
		die("Database connection failed: " . mysql_error());
	}
	$db_select = mysql_select_db(DB_NAME,$connection);
	if (!$db_select) {
		die("Database selection failed: " . mysql_error());
	}
}

In settings.php we’ll assign values to the variables. Always remember to use secure passwords.

^?View Code LANGUAGE

// Database Configuration
$database['server'] = "localhost";
$database['user'] = "xxx";
$database['password'] = "xxx";
$database['name'] = "xxx";

The actual connection code is now pretty easy to implement. You can call it whenever and however you’d like with only one line of code.

^?View Code LANGUAGE

1 2	// Connection to the database via function connectSQL($database['server'], $database['user'], $database['password'], $database['name']);

Finally, to actually use this, simply include the connection.php

^?View Code LANGUAGE

1	include 'connection.php';

Morning

Antonio Ciccarone — Fri, 02 Apr 2010 13:43:46 +0000

I’m outside smoking a cigarette before it’s time to wake the family up. Happy Good Friday, if I’m not mistaken Jesus died today. I hear snoring coming through a neighbors window to the left and a sickly alarm clock vomiting in 4/5.

Half-day at work today, we might go see ‘how to train your dragon’ after we pick up the boys from Sheena’s parents’ house. Jacob started preschool this week, he seems to really like it and got into the flow of things very quickly. Jaiden is off for Spring Vacation all week starting today, I’m sure he’s souped.

The CRM demo went well, I’m 60% complete with the first scope! My online voting application went online this week for council testing, got some pretty high praise from the guinea pigs. Made it mobile yesterday per request. It has it’s own session based authentication now along with a bunch of other bells and whistles.

Four minutes til’ opening – can’t wait to see the wife go into mommy-mode. Better wash my smokey hands now.

Share Me

Getting my feet RET

Antonio Ciccarone — Thu, 22 Oct 2009 19:31:26 +0000

Today I’ll be connecting to a Postgres database for the first time. I’m used to mySQL but I hear they’re basically the same when it comes down to functionality. I’ve already started working on an AJAX based property search with some sample data, so I just have to take my code off of dev.urbiance and hook it into our server.

I’m also a virgin to remote databases, it looks like the connection is working – but I haven’t queried or echoed anything yet. So far I’ve got a Javascript price slider, city selector and zip code input which send an XMLHttp request to a php page, query the property table and send the response text back into a div. Going for a completely object-oriented code structure here, wish me luck. I’ll be updating my progress and snippets along the way here on my blog.

Happy remote coding, Antonio