php - $_SERVER ['HTTP_REFERER' ] 与 Request.ServerVariables ("HTTP_REFERER")

Question

如果查询字符串包含非英文字符，为什么 $_SERVER['HTTP_REFERER'] (PHP) 和 Request.ServerVariables("HTTP_REFERER") (ASP) 返回不同的结果？

php 返回正确的值但 asp 不会:

php: сабака

asp: ׁ׀°׀±׀°׀÷׀°

Answer 1

根据 RFC 2616 , 不在 ISO-8859-1 中的字符应进行特殊编码。因此，无论是谁向您发送 header ，似乎都违反了规范。请参阅field-content 和TEXT。

4.2 Message Headers

message-header = field-name ":" [ field-value ]
field-name     = token
field-value    = *( field-content | LWS )
field-content  = <the OCTETs making up the field-value
                 and consisting of either *TEXT or combinations
                 of token, separators, and quoted-string>

2.2 Basic Rules

TEXT           = <any OCTET except CTLs,
                 but including LWS>

The TEXT rule is only used for descriptive field contents and values that are not intended to be interpreted by the message parser. Words of *TEXT MAY contain characters from character sets other than ISO- 8859-1 [22] only when encoded according to the rules of RFC 2047 [14].