Add support for more SQL databases

+ Bugfixes
+ Adding prefix to table names
+ Using PDO instead of mysqli

Author: beranek1

README.md

@@ -9,13 +9,13 @@ There are atleast 4 reasons:
 * **it's free**
 
 ## Usage
-* Place webanalytics.php and websettings.php in the same directory as your own php scripts, and modify the mysql parameters (user, password, database, host) in websettings.php. (Recommended, makes updates easier)
+* Place webanalytics.php and websettings.php in the same directory as your own php scripts, and modify the database parameters in websettings.php.
 #### OR
-* Place only webanalytics in the same directory as your own php scripts and modify the mysql parameters (user, password, database, host) in webanalytics.php.
+* Place only webanalytics.php in the same directory as your own php scripts and modify the database parameters in webanalytics.php.
 
 websettings.php / webanalytics.php
 ```php
-$web_analytics_db = new web_db_manager("user", "password", "database", "localhost");
+$web_analytics_db = new web_db_manager("mysql:dbname=database;host=127.0.0.1", "user", "password");
 ```
 
 After that all you need to do is including webanalytics.php in your own php scripts to start collecting data:
@@ -34,7 +34,6 @@ To run web analytics manually use following code:
 ```php
 $web_analytics_db->connect();
 $web_analytics = new web_analytics($web_analytics_db, $_SERVER, $_COOKIE);
-$web_analytics_db->close();
 ```
 
 As a professional you might also want to try our yet experimental JavaScript for collecting additional data:
@@ -44,7 +43,7 @@ As a professional you might also want to try our yet experimental JavaScript for
 
 ## Requirements
 * PHP 5.0 or higher
-* a MySQL Server
+* a database server with PDO driver
 * (a webserver of course)
 
 ### PLEASE NOTE: WebAnalytics is still in development. We rely on your feedback!