php Header 函数使用

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<?php header('HTTP/1.1 200 OK'); // ok 正常访问 header('HTTP/1.1 404 Not Found'); //通知浏览器 页面不存在 header('HTTP/1.1 301 Moved Permanently'); //设置地址被永久的重定向 301 header('Location: http://www.ithhc.cn/'); //跳转到一个新的地址 header('Refresh: 10; url=http://www.ithhc.cn/'); //延迟转向 也就是隔几秒跳转 header('X-Powered-By: PHP/6.0.0'); //修改 X-Powered-By信息 header('Content-language: en'); //文档语言 header('Content-Length: 1234'); //设置内容长度 header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); //告诉浏览器最后一次修改时间 header('HTTP/1.1 304 Not Modified'); //告诉浏览器文档内容没有发生改变     ###内容类型### header('Content-Type: text/html; charset=utf-8'); //网页编码 header('Content-Type: text/plain'); //纯文本格式 header('Content-Type: image/jpeg'); //JPG、JPEG header('Content-Type: application/zip'); // ZIP文件 header('Content-Type: application/pdf'); // PDF文件 header('Content-Type: audio/mpeg'); // 音频文件 header('Content-type: text/css'); //css文件 header('Content-type: text/javascript'); //js文件 header('Content-type: application/json'); //json header('Content-type: application/pdf'); //pdf header('Content-type: text/xml'); //xml header('Content-Type: application/x-shockw**e-flash'); //Flash动画     ######     ###声明一个下载的文件### header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename="ITblog.zip"'); header('Content-Transfer-Encoding: binary'); readfile('test.zip'); ######     ###对当前文档禁用缓存### header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); ######     ###显示一个需要验证的登陆对话框### header('HTTP/1.1 401 Unauthorized'); header('WWW-Authenticate: Basic realm="Top Secret"'); ######         ###声明一个需要下载的xls文件### header('Content-Disposition: attachment; filename=ithhc.xlsx'); header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'); header('Content-Length: '.filesize('./test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate'); header('Pragma: public'); readfile('./test.xls'); ###### ?>

　　综上 Header 使用实例：Request >> PHP 返回json对象：

 

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* TODO 数据返回结构  * @param $code  * @param $msg  * @param $data  * @param $url  * @param $wait  * @return array  */ function msg_array($code = 1,$msg="",$data=[],$url="",$wait= 3) {     $result = [         'code' => $code,         'msg'  => $msg,         'data' => $data,         'url'  => $url,         'wait' => $wait,     ];     return $result; }   header("Content-Type: application/json"); echo json_encode(msg_array(0,'logout success !'));exit;

　　

 

标准响应字段

 

 

 

媒体类型 Content-Type ： 常见的例子

• application/javascript
• application/json
• application/x-www-form-urlencoded
• application/xml
• application/zip
• application/pdf
• application/sql
• application/graphql
• application/ld+json
• application/msword (.doc)
• application/vnd.openxmlformats-officedocument.wordprocessingml.document(.docx)
• application/vnd.ms-excel (.xls)
• application/vnd.openxmlformats-officedocument.spreadsheetml.sheet (.xlsx)
• application/vnd.ms-powerpoint (.ppt)
• application/vnd.openxmlformats-officedocument.presentationml.presentation (.pptx)
• application/vnd.oasis.opendocument.text (.odt)
• audio/mpeg
• audio/ogg
• multipart/form-data
• text/css
• text/html
• text/xml
• text/csv
• text/plain
• image/png
• image/jpeg
• image/gif