php - PHP：网址编码

Question

我有 2 个文件： test.php并且test.html内容相同

 <meta charset="utf-8">
 <script>
     document.write(encodeURIComponent(';²'));
 </script>

php 的输出是%3B%3F，html 的输出是%3B%C2%B2. 我怎样才能为 php 获得相同的结果？如何转换;²为%3B%C2%B2使用 php 函数？

Answer 1

您可以使用html_entity_decode()² 的函数和 html 实体代码，² 您的代码将如下所示：

<meta charset="utf-8">
     <script>
         document.write(encodeURIComponent(';<?php echo html_entity_decode("&sup2;") ?>'));
     </script>

Answer 2

您可以使用urlencode()函数

echo urlencode(';²');

以上函数输出%3B%C2%B2

Answer 3

谢谢！我的 IDE 将文件编码从 UTF-8 恢复为 ANSI，但仍能正确显示²。如果文件以 UTF-8 保存，则输出相同。

Answer 4

您没有说明使用了哪个 php 函数，但我建议

urlencode() 

但是您应该记住，存在细微的差异。http://phpjs.org/functions/urlencode/的人使 js 等同于 phpencode ：

function urlencode(str) {
  //       discuss at: http://phpjs.org/functions/urlencode/
  //      original by: Philip Peterson
  //      improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  //      improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  //      improved by: Brett Zamir (http://brett-zamir.me)
  //      improved by: Lars Fischer
  //         input by: AJ
  //         input by: travc
  //         input by: Brett Zamir (http://brett-zamir.me)
  //         input by: Ratheous
  //      bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  //      bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  //      bugfixed by: Joris
  // reimplemented by: Brett Zamir (http://brett-zamir.me)
  // reimplemented by: Brett Zamir (http://brett-zamir.me)
  //             note: This reflects PHP 5.3/6.0+ behavior
  //             note: Please be aware that this function expects to encode into UTF-8 encoded strings, as found on
  //             note: pages served as UTF-8
  //        example 1: urlencode('Kevin van Zonneveld!');
  //        returns 1: 'Kevin+van+Zonneveld%21'
  //        example 2: urlencode('http://kevin.vanzonneveld.net/');
  //        returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
  //        example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
  //        returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'

  str = (str + '')
    .toString();

  // Tilde should be allowed unescaped in future versions of PHP (as reflected below), but if you want to reflect current
  // PHP behavior, you would need to add ".replace(/~/g, '%7E');" to the following.
  return encodeURIComponent(str)
    .replace(/!/g, '%21')
    .replace(/'/g, '%27')
    .replace(/\(/g, '%28')
    .
  replace(/\)/g, '%29')
    .replace(/\*/g, '%2A')
    .replace(/%20/g, '+');
}