cfi

clean_html_comments() is a user defined function. First question is: do you have in that file included another file where clean_html_comments() is defined? have you searched to see where is defined? function clean_html_comments() could cotain some code with strip_tags(), etc... googleing showed this: you have to add this line in application.top require(DIR_WS_FUNCTIONS . 'clean_html_comments.php');