Errata

The example has one too many brackets. This is the text in the book:
'''[[dog]]]'''

This is what the text should be:
'''[[dog]]'''

Note from the Author or Editor:
The reader is correct. Change the triple bracket ]]] into a double bracket ]]

The statement
-------------
If you don?t want any logo, set:
$wgLogo = false;
-------------
is not correct. This means to use the default logo.

Note from the Author or Editor:
The line of code should be changed to:

$wgLogo = '';

In the definition of function ufUserVariable_Magic(), the second parameter, $langID , is passed by reference with an ampersand. However, in more recent versions of mediaWiki (I tried the code in Mediawiki 15.3) the second parameter must not be passed by reference - if you do, you get an error message and the wiki execution stops.

Note from the Author or Editor:
In example 15-2, in the line:

function wfUserVariable_Magic(&$magicWords, &$langID) {

remove the ampersand from &$langid, making it $langID.

In trying example 15-5 with MediaWiki 15.3, I discovered that the example shows the 3rd parameter is passed by reference. This prevents the function from executing. Removing the & from the parameter making it pass by value allows the code to work in this version of MediaWiki. Two pages later, example 15-7 on page 297 correctly passes this parameter by value.

Note from the Author or Editor:
On page 295, example 15-5, in the fifth line from the bottom ("static function render..."), locate the word:

&$parser

and remove the ampersand (&) to make it:

$parser

The final paragraph should end with this additional sentence, if it will fit:

Message names must be lowercase.

just after the phrase "English, French, and Spanish." The word "must" should be emphasized in italics.

Note from the Author or Editor:
This is correct. If message names are not lowercase, the code will not work.

The database name is missing in the following line:

mysql -u root -p****** < backupfile.sql

It should be changed to:

mysql -u root -p****** wikidb < backupfile.sql

Note from the Author or Editor:
The reader is correct.

Example 16-2 uses the class 'SecureLoginPage' from Example 16-3.
All 3 times the class called incorrectly ('FancyForm' or 'SecureLogin').

Note from the Author or Editor:
1. The caption to example 16-2 should be changed from:

Example 16-2: SecureLogin.php

to:

Example 16-2: SecureLoginPage.php

2. Line 9 of example 16-2 should have the word FancyForm changed
to SecureLoginPage, and each of lines 10-12 need the word
SecureLogin changed to SecureLoginPage. There is one change per
line, for a total of four changes. The result should be:

$wgAutoloadClasses['SecureLoginPage']
= dirname(__FILE__) . '/SecureLoginPage_body.php';
$wgHooks['UserLoginForm'][] = 'SecureLoginPage::secureLogin';
$wgHooks['BeforePageDisplay'][] = 'SecureLoginPage::otherPage';

Changes to example 16-3:

1. The caption should be changed from:

Example 16-2: SecureLogin_body.php

to:

Example 16-2: SecureLoginPage_body.php