"GET" or "POST"

[Farabi]

For example I post a url address like this http://path/to/script.php?a=1&b=2 and the php page process an image and display it on a webpage

What MIME Type I should use? And what Method I should use, POST or GET?

[dedndave]

for PHP stuff, i like Gary's little site
http://apptools.com/
he explains things very clearly   :U

i am guessing GET
you can use different mime types, depending on how you want the content to be rendered
the URL you provided doesn't help us much, though   :P

[mineiro]

you can use GET Sr Farabi.
GET have a limit of 255 chars in the URI, but today browsers don't have this limit, and the argument's are visible.
http://messagebox/user32.php?hinst=0&lpText=hello&Caption=nice&Type=MB_OK
in POST they are entered by the user, so the URL don't show this, and this limit is 4kb.
regards.