cntnd_core

• includes in "php" files: cInclude('module', 'includes/class.module.mparticleinclude.php');
• includes in "includes" php files: include_once($moduleHandler->getModulePath() . 'vendor/xyz.php');

contenido php functions

• $client = cRegistry::getClientId();
• $lang = cRegistry::getLanguageId();
• mi18n("SELECT_ARTICLE")
• buildArticleSelect("CMS_VAR[2]", $oModule->cmsCatID, $oModule->cmsArtID);

docs

https://docs.contenido.org/display/COND/Extras