Support Libraries

Start

Does

configuration.php

exist?

Load web

installer

No

globals.php

configuration.php

Yes

sef.php

legacy.php

frontend.php

Determine 'option' and

'Itemid' from URI or first

link in Main Menu

Joomla! 1.0 – Site index.php flow diagram

Change some values of

'option' to support legacy

versions

Create $mainframe

Initialise the user session

Load language

Are we doing

'login' or 'logout

Process and

redirect

Yes

joom

la.php

version.php

database.php

gacl.class.php

gacl_api.class.php

class.phpmailer.php

joomla.xml.php

Buffer 'component' output

Store in

$_MOS_OPTION['buffer']

Buffer

Load 'template'

End

Summary of Purpose of Included Files

(note, directory prefix is omitted for clarity)

globals.php

Emulates register_globals = off

configuration.php

Global configuration settings for Mambo

compat.41x.php, compat.42x.php & compat.50x.php

Compatibility functions for different versions of PHP.

joomla.php & joomla.xml.php

Many support classes and function. Creates database, acl and

mambot global handlers

legacy.php

A collection of code that supports legacy operations. Code in

this file is likely to be removed in future versions as the need for

legacy support increases.

sef.php

Support code for Search Engine Friendly URL's

frontend.php

Support functions for frontend template processing

frontend.html.php

Presentation (html) support functions for template processing

version.php

The current version of the Mambo application

database.php

Support classes for database abstraction

gacl.class.php & gacl_api.class.php

Support classes for user access control

class.phpmailer.php

Support classes for mailing

Components

The Components Collection is located in the /components

directory. Each component has it's own folder where the name

of the folder is prefixed with 'com_'.

component.php

Processes 'task's passed via the URI. For tasks such as 'save'

there is no html output and the script redirects the URL to a

different location. This prevents, for example, 'double' saves if

you refresh the browser immediately after the event.

component.html.php

The presentation layer handler for the component.

Modules

Modules positions are loaded dynamically based on database

settings. Support functions and classes for module processing

are found in frontend.php and frontend.html.php.

Copyright © 2005 Open Source Matters, all rights reserved

frontend.html.php

component.php

'task'

component.html.php

Presentation

Load dynamic module

positions

Flush buffered content

Process and

redirect actions

(eg save)

Is site offline

Show offline

template

Yes

compat.php41x.php

compat.php42x.php

Old PHP Compatibility

compat.php50x.php