I want to contribute this patch to the base64_decode function, but I don't want to set up CVS if I don't have to.  Please let me know if I should try this instead through CVS.

base64_decode is part of the URL functions set, but it doesn't handle base64 that's been POSTed.  After POSTing, all the pluses turn to spaces.  This code makes the base64_decode smart enough to deal with that.  It's not entirely necessary, but it will save people time and hair-pulling and there are no cons.

[turadg@wise ~]$ diff base64.c
/usr/local/src/php-3.0.14/functions/base64.c
96,102d95
<               /* When Base64 gets POSTed, all pluses are interpreted as spaces.
<                  This line changes them back.  It's not exactly the Base64 spec,
<                  but it is completely compatible with it (the spec says that
<                  spaces are invalid).  This will also save many people considerable
<                  headache.  - Turadg Aleahmad <turadg@wise.berkeley.edu>
<               */
<            if (ch == ' ') ch = '+';