moodler 607809b3ba OK a number of small changes here.
Firstly, I'm replacing all use of old-style global variables like
$HTTY_REFERER with their new-style equivalent $_SERVER["HTTP_REFERER"]
Also using $_POST instead $HTTP_POST_VARS  etc

Secondly, if gdversion == 0 (ie GD is not installed) then:

 - users are not even allowed to upload new images
 - graphs now just print a message instead of failing.

this allows Moodle to still be used even if GD is not present
2003-01-05 06:45:20 +00:00
..
2002-08-28 13:36:36 +00:00
2003-01-05 06:45:20 +00:00
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