ajax remembering page: # vs ?

Question

im trying to use jquery bbq for remembering page with ajax.

but i wonder, why should i use # values and not ? values for remembering pages eg.

?country=1&region=2

then get the values with $_GET and display the appropiate info

vs

#country=1&region=2

cause the latter one i cannot get it with php right?

Answer 1

Because

#country=1&region=2

is bad URL syntax. This is correct:

?country=1&region=2

and this is also correct:

?country=1&region=2#bookmarkname

Note, that # values must go AFTER ?-& values. This rule is not from PHP or jQuery, this is basic URL syntax.

P.S. String after # is not sent to web server (and PHP can't get it), so you HAVE to use valid syntax.