Data Dictionary: Output the structure of a MySQL database

Functionality to display a data dictionary for any database on the server.
This defaults to displaying a webpage (index.php) and can also create
csv and xml files.

Developed and tested on a MySQL server; however, since it uses the PDO
library, this ought to be usable on any type of database server that a) is
supported by PDO, and b) uses the information_schema database as per the
ANSI standards.

This is for development use only. Do not use on a production server or
anywhere else publicly accessible. Like phpinfo(), this might give people
information that you don't want them to have. Use at your own risk.

files provided
index.php
    displays information_schema's data dictionary as a webpage and
    provides links to all the server's databases' data dictionaries and
    provides functionality to convert displayed data dictionary to csv or xml
    consider this as an example
schemas.css
    colors used: blue, gray, #ddddff
DataDictionary.class.php
	Class: DataDictionary
	__construct($dsn, $host, $dbase, $user, $pass) 
	    creates a database connection using the PDO library and
	    uses three sql statements to get database information
	    from the information_schema database
	public functions:
	getDBarray() 
	    returns the names of all databases on the server as an array
	getDBtablearray() 
	    returns table information for the tables in a database as an array
	getTablearray() 
	    returns the names of all tables in a database as an array
	getTabledetails() 
	    returns column information for all the tables in a database as an array
	getColarray($table) 
	    returns column information for a specific table as an array
	getColumnHeadings($array)
	    returns the array keys for an array
DDConverver.class.php
	Class: DDConverter extends DataDictionary
	__construct($type, $dsn, $host, $dbase, $user, $pass)
	    calls DataDictionary and
	    based on $type, returns a csv file or an xml document
	no public functions
DDPresenter.class.php
	Class: DDPresenter
	    html helper functions for index.php
	public functions:
	createDBNavbar($dbarray) 
	    creates list of databases as GET links
	createTablesNavbar($tablearray)
	    creates list of database tables as internal links
	createTable($array, $headers)
	    creates a table to display information