problem in receive sql statement

[eluser]abada[/eluser]
hi

how r u all ??

please i have a strange problem

when i receive a parameter from url such as

index.php?Where=IDE9MSAgYW5kIHJlZ2lzdGVyX2RhdGU+PScyMDExLTA4LTI5JyBhbmQgcmVnaXN0ZXJfZGF0ZTw9JzIwMTEtMTAtMjQnIGFuZCBpbnF1aXJpZXMuYWN0aXZlPTAgYW5kIHN0YWdlX2lkPTEgYW5kIHBob25lIGxpa2UgICclNTAlJyAg

and Where as u can see it encoded by base64

and when decoded it appear like this

1=1 and register_dateǏLKLL�I�[��Y����]OǏLKLLL� �[�[�]Z�Y˘X�]�OL[��Y�W�YLH[�ۙHZ�H �ML I�

why ??

i tried url_encode but failed !!!

plz help me what can id do ??