[TYPO3-dev] RFC: #7377: pmkisac - function declared in ext_localconf.php leads to fatal error

[Andreas Stauder]

Hi all,

in the now published v4.2 the "update wizard" in the install-tool is 
broken. This is the first thing you will try if upgrading from earlier 
versions...

http://bugs.typo3.org/view.php?id=7377

Function declared in ext_localconf.php leads to fatal error in some 
modules (ie. in the install tool). That is because ext_localconf.php is 
loaded additinaly from the cache, which means that the function 
user_pmkisac is declared twice.

The clean solution would be to extract the function in a class and 
include this class by typoscript includeLibs.

The easy solution which we use for the moment is to check if the 
function is already declared (see additional information).

Andreas