从header()获取PHP内容类型

Dav*_*ues 4 php content-type header http

我需要出于"安全原因"获取PHP的内容类型.例如,如果你使用了这个函数header("Content-type: text/html; charset=utf-8"),在将来的执行时,我如何分别收到content-type(text/html)和charset(utf-8)?

我真正的问题是知道正在使用哪个字符集,并在必要时修改它,而无需重新定义信息Content-type.即如果内容类型是application/xml,请保留它,但更改唯一的字符集.

防爆.

Original:    Content-type: text/html
First:       -> set to application/xml.
             Content-type: application/xml
Second:      -> set charset.
             Content-type: application/xml; charset=utf-8
Third:       -> set to text/html
             Content-type: text/html; charset=utf-8
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怎么可能?

Ora*_*ill 7

您可以使用函数headers_list来获取响应标头.从那里应该只是解析出相关的标题并在需要时重写.

  $headers = headers_list();
  // get the content type header
  foreach($headers as $header){
         if (substr(strtolower($header),0,13) == "content-type:"){
              list($contentType, $charset) = explode(";", trim(substr($header, 14), 2));
              if (strtolower(trim($charset)) != "charset=utf-8"){
                   header("Content-Type: ".trim($contentType)."; charset=utf-8");
              }
         }
  }
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