问题描述
我注意到很多网站在搜索或浏览时都会添加一个名为 utf 的get变量，并将其设置为复选标记（？utf8 =✓）。
I've noticed that a lot of websites, when searching or just browsing, will add a get variable called utf and set it equal to a check mark (?utf8=✓).
两个例子是：
-
Dotabuff的搜索网址包含它。示例：dotabuff.com/search?utf8=✓&q=PPD
Dotabuff has its search URL include it. Example: dotabuff.com/search?utf8=✓&q=PPD
Bibme的搜索网址也包含它。示例：bibme.org/mla/website-citation/search?utf8=✓&q=someurl.com
Bibme also has its search URL include it. Example: bibme.org/mla/website-citation/search?utf8=✓&q=someurl.com
推荐答案
URI包含 utf8 =✓以强制客户端发送UTF-8。
它的工作原理是因为key-value-pair（服务器忽略）包含一个仅unicode字符。
URIs contain utf8=✓ to force the client to send UTF-8.
It works because the key-value-pair (which is ignored by the server) contains a unicode-only character.
来自：
如果参数是 utf8 = true ，那么这不会在这些浏览器中触发UTF-8编码。
If the parameter was instead utf8=true then this wouldn't trigger the UTF-8 encoding in these browsers.
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