iconv with UTF-7-IMAP support

I have recently found someone that has written a patch for iconv library to support UTF-7-IMAP encoding (http://www.technoids.org/utf7imap/index.html). Within the patching instruction it is required to edit the iconv library file of PHP in order to handle idiosncrasies #2 (there is an example of editing the Perl equivalent file), in that the end-of-string in UTF-7 IMAP must include bytes that set the encoding back to the US-ASCII state (with a hyphen). However I am a newbie in C programming and I have tried to edit the iconv.c file without success. I would very much appreciate if someone could give me some help in applying the changes so that the iconv library of PHP can handle UTF-7 IMAP encoding. To summarize I think it is required to add a null character to end each UTF-7 IMAP encoded character: result = iconv(cd, (char **) NULL, &in_left, (char **) &out_p, &out_left); I have made several attempts to add the above line into the php_iconv_string function, but it didn't work (compiling is ok). I would very much appreciate if someone could provide some advice or help in the above. Thank you in advance Bjai