DeleteFile

CPosting::DeleteFile(
 int ID,
 int file_id = false
);

Method deletes a single or all message post attachments. Static method.

Parameter	Description	Available from version
ID	Post ID.
file_id	Attachment ID. If parameter is not specified or false, deletes all post attachments.

None.

    if(is_array($FILE_ID))
        foreach($FILE_ID as $file_id)
            CPosting::DeleteFile($ID, $file_id);