PHP Function details: urlencode ()

PHP Function details: urlencode ()

The urlencode function encodes the input string parameters. The returned string contains -. ", all non-alphanumeric characters are replaced with a semicolon (%) followed by two hexadecimal numbers, and spaces are encoded as the plus sign (+ ). This function allows you to encode a string and use it in the request part of a URL. It also allows you to pass variables to the next page. URLEncode: a pointer to the Chinese characters in the url of a web page. The most common method is to enter Chinese characters in search engines such as Baidu and Google, generate a webpage URL that has passed the Encode. URLEncode has two methods: the traditional GB2312-based Encode (Baidu, Yisou, etc.), and the UTF-8-based Encode (Google, Yahoo, etc ). This tool implements Encode and Decode in two ways respectively. Chinese-> GB2312 Encode-> % D6 % D0 % CE % C4 English-> UTF-8 Encode-> % E4 % B8 % AD % E6 % 96% 87 URLEncode in Html In the html file encoded as GB2312, http://www.nowamagic.net/ .rar-> the browser automatically converts to-> http://www.nowamagic.net/%D6%D0%CE%C4.rar Note: Firefox does not support the Chinese URL of the GB2312 Encode, because it is the UTF-8 encoding by default to send the URL, but ftp: // protocol can. Encode the UTF-8 in the html file, http://www.nowamagic.net/ .rar-> the browser automatically converts to-> http://www.nowamagic.net/%E4%B8%AD%E6%96%87.rar URLEncode in PHP: // GB2312 Encode Echo urlencode ("Chinese-_."). "\ n"; // % D6 % D0 % CE % C4-_. + Echo urldecode ("% D6 % D0 % CE % C4-_."). "\ n"; // Chinese -_. Echo rawurlencode ("Chinese-_."). "\ n"; // % D6 % D0 % CE % C4-_. % 20 Echo rawurldecode ("% D6 % D0 % CE % C4-_."). "\ n"; // Chinese -_. ?> All non-alphanumeric characters except-_. will be replaced with a semicolon (%) followed by two hexadecimal numbers. The difference between urlencode and rawurlencode: Urlencode encodes a space into a plus sign (+) Rawurlencode encodes a space into a plus sign (% 20) If you want to use the UTF-8's Encode, there are two ways: Save the file as a UTF-8 file, directly use urlencode, rawurlencode. Use the mb_convert_encoding function. $ Url = 'http: // www.nowamagic.net/ .rar '; Echo urlencode (mb_convert_encoding ($ url, 'utf-8', 'gb2312 '). "\ n "; Echo rawurlencode (mb_convert_encoding ($ url, 'utf-8', 'gb2312 '). "\ n "; // Http%3A%2F%2Fwww.nowamagic.net%2F%E4%B8%AD%E6%96%87.rar ?> Instance: Function parseurl ($ url = "") { $ Url = rawurlencode (mb_convert_encoding ($ url, 'gb2312', 'utf-8 ')); $ A = array ("% 3A", "% 2F", "% 40 "); $ B = array (":","/","@"); $ Url = str_replace ($ a, $ B, $ url ); Return $ url; } $ Url = "ftp: // ud03: password@www.nowamagic.net/Chinese/ .rar "; Echo parseurl ($ url ); // Ftp: // ud03: password@www.nowamagic.net/% D6 % D0 % CE % C4/127d6%d0%ce%c4.rar ?> URLEncode in JavaScript: % E4 % B8 % AD % E6 % 96% 87 -_. % 20% E4 % B8 % AD % E6 % 96% 87 -_. % 20, encodeURI does not encode the following characters: ":", "/", ";", "?" And.