看看php.ini 文件中有
; This directive describes the order in which PHP registers GET, POST, Cookie,
; Environment and Built-in variables (G, P, C, E & S respectively, often
; referred to as EGPCS or GPC). Registration is done from left to right, newer
; values override older values.
variables_order = "EGPCS"; Maximum size of POST data that PHP will accept.
post_max_size = 8M; Magic quotes for incoming GET/POST/Cookie data.
magic_quotes_gpc = On;always_populate_raw_post_data = On
是不是post选项off了，改成on去掉分号，试一下
; This directive describes the order in which PHP registers GET, POST, Cookie,
; Environment and Built-in variables (G, P, C, E & S respectively, often
; referred to as EGPCS or GPC). Registration is done from left to right, newer
; values override older values.
variables_order = "EGPCS"; Maximum size of POST data that PHP will accept.
post_max_size = 8M; Magic quotes for incoming GET/POST/Cookie data.
magic_quotes_gpc = On;always_populate_raw_post_data = On
是不是post选项off了，改成on去掉分号，试一下
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