no m8 when u doing hacks u supposed to backup the files so u always have a copy to go back to incase soemthing goes wrong.So in this case u would of had a backup of functions_online.php.If not just retrace your steps and in future always save a copy of the file u are editing (BEFORE EDITING

)to a seperate folder on your H/D so if anything goes wrong u can always use the file that u backedup