How to transmit garbled Chinese parameters in ajax

Pass Chinese parameters, and then modify the database tutorial.

The code is as follows:

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<Script> Var url = "admin/ajaxmodify. php? "+ Key +" = "; Url + = encodeuricomponent (value )); Xmlhttp. open ("get", url, true ); Xmlhttp. send (null ); </Script> The parameter is Chinese. encodeuricomponent. This method must be called twice. */ Function utf8rawurldecode ($ source ){ $ Decodedstr = ""; $ Pos = 0; $ Len = strlen ($ source ); While ($ pos <$ len ){ $ Charat = substr ($ source, $ pos, 1 ); If ($ charat = '% '){ $ Pos ++; $ Charat = substr ($ source, $ pos, 1 ); If ($ charat = 'u '){ // We got a unicode character $ Pos ++; $ Unicodehexval = substr ($ source, $ pos, 4 ); $ Unicode = hexdec ($ unicodehexval ); $ Entity = "& #". $ unicode .';'; $ Decodedstr. = utf8_encode ($ entity ); $ Pos + = 4;   } Else { // We have an escaped ascii character $ Hexval = substr ($ source, $ pos, 2 ); $ Decodedstr. = chr (hexdec ($ hexval )); $ Pos + = 2;   } } Else { $ Decodedstr. = $ charat; $ Pos ++;   }   } Return $ decodedstr; }

/*
Note: In js, encodeuricomponent () or encodeuri () is recommended for character transcoding, rather than escape (). The reason is that escape () only converts ascii characters to % unnnn. If you want to use more characters, such as the UTF-8 character library, you must use encodeuricomponent () or encodeuri () can be converted to % nn.

Js: encodeuricomponent -- decodeuricomponent; php: rawurlencode -- rawurldecode

*/