Thread

I use a php-function, called conversie_string, to do some string-manipulation.

This function is defined in one template, but is also used in templates which are embedded into this template. Normally, this works fine, but sometimes visitors of our website get this error:

Fatal error: Call to undefined function conversie_string() in
/var/www/html/mfsys/core/core.functions.php(631) : eval()‘d code on line 20

All the templates are cached, but they have a different refresh-interval.

How can I solve this problem?

The best way?  Make it a plugin- or possibly an extension- but in truth, it sounds like a natural for a plugin.  Take a look at something simple like Find and Replace for some tips- and then the developer docs have an example plugin tutorial- it sounds like you could just tweak that tutorial to end up with what you want.