From b2evolution manual

These guidelines were provided by Dave Kulju

This isn't a comprehensive list but here are some of the ones I remember...

<source lang="php"> php skinbase() </source> changed to <source lang="php"> skin_base_tag() </source>

<source lang="php"> $Item->Author->prefered_name() </source> changed to <source lang="php"> $Item->author() </source>

<source lang="php"> $Blog = Blog_get_by_ID( $blog ) </source> was not longer valid so I had to replace it with <source lang="php"> $BlogCache = & get_Cache( 'BlogCache' ); $Blog = & $BlogCache->get_by_ID( $blog, false ); </source>

<source lang="php"> $Item->permalink() </source> changed to <source lang="php"> $Item->permanent_url(); </source>

<source lang="php"> if( !defined('DB_USER') ) die( 'Please, do not access this page directly.' ); </source> changed to <source lang="php"> if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page directly.' ); </source>