The Host request-header field (section 14.23) MUST accompany(陪伴，陪同;附加，补充;与…共存;) all HTTP/1.1 requests...The methods GET, HEAD, PUT and DELETE share this property....be indicated by a Content-Type field....Expires header fields....If the resource could not be created or modified with the Request-URI, an appropriate(适当的;合适的;) error
, since not all servers implement this request-header. 14.17 Content-Type(内容类型) The Content-Type entity-header...Content-Type = "Content-Type" ":" media-type Media types are defined in section 3.7....An HTTP/1.1 proxy MUST ensure that any request message it forwards does contain an appropriate(适当的;合适的...field did not exist, but MUST also ignore any If-Modified-Since header field(s) in the request.... - The presence of a Range header in a conditional GET (a request using one or both of If-Modified-Since
, since not all servers implement this request-header. 14.17 Content-Type(内容类型) The Content-Type entity-header...Content-Type = “Content-Type” “:” media-type Media types are defined in section 3.7....An HTTP/1.1 proxy MUST ensure that any request message it forwards does contain an appropriate(适当的;合适的...field did not exist, but MUST also ignore any If-Modified-Since header field(s) in the request....– The presence of a Range header in a conditional GET (a request using one or both of If-Modified-Since
The entity format is specified by the media type given in the Content-Type header field....The response MUST include the following header fields: – Either a Content-Range header field (section...or Last-Modified headers do not match exactly, see 13.5.4....The entity format is specified by the media type given in the Content-Type header field....The entity format is specified by the media type given in the Content-Type header field.
. no-store Response Response must not be cached. no-transform Response Response must not be modified...version that was last modified at the time in your previous Last-Modified response header is no longer...was last modified at the time in your previous Last-Modified response header....Delta using the gdiff algorithm gzip Compression using the gzip algorithm deflate Compression using...Entity header Accept(ex:image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*) Content-Type
appropriate Cache-Control header to help the browser with conditional requests Web page designs are...Using a far future Expires header affects page views only after a user has already visited your site....If the style property must be set dynamically throughout the life of the page, using event handlers instead...The origin server specifies the component's ETag using the ETag response header....The Last-Modified header validates based on the component's timestamp.
& some data ID of parent block If parent block is modified -> it header change -> parent’s ID...peer will aggregate a collection of facts it has received, place them into a bloc, create an appropriate...that are part of the blockchain and what are the advantages and disadvantages of this modification property...identify and link blocks -understand how digital signatures be used to verify data on the blockchain using...Alternatively could encrypt the fact using Alice's public key.
Note: This section is a modified version of the mod_rewrite documentation, which is Copyright 1995-2006...%{ENV:variable}, where variable can be any Java system property, is also available....%{HTTP:header}, where header can be any HTTP MIME-header name, can always be used to obtain the value...an interface that users must implement....This can be used to set up the content-type based on some conditions.
('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 /** *声明一个需要下载的xls.../test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate')...header('Content-Type: application/x-shockw**e-flash'); // Flash动画header('Content-Type: image/jpeg');.../** *对当前文档禁用缓存 */ header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); 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...header('Content-type: application/pdf'); //pdf header('Content-type: text/xml'); //xml header('Content-Type...: 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.../test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate')
('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...header('Content-type: application/pdf'); //pdf header('Content-type: text/xml'); //xml header('Content-Type...: 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.../test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate')
//定义编码 header( 'Content-Type:text/html;charset=utf-8 '); //Atom header('Content-type: application/atom...); //告诉浏览器最后一次修改时间 header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).'...GMT'); //告诉浏览器文档内容没有发生改变 header('HTTP/1.1 304 Not Modified'); //设置内容长度 header('Content-Length: 1234'...('example.zip'); // 对当前文档禁用缓存 header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate')...: must-revalidate'); header('Pragma: public'); readfile($filename);
信息 header('Content-language: en'); //文档语言 header('Content-Length: 1234'); //设置内容长度 header('Last-Modified...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...'); //json header('Content-type: application/pdf'); //pdf header('Content-type: text/xml'); //xml header...: no-cache, no-store, max-age=0, must-revalidate'); header('Expires: Mon, 26 Jul 1997 05:00:00 GMT').../test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate')
Not all resources will support all methods, but all resources using the methods below MUST conform to...Using these headers is not mandated, but if used they MUST be used consistently. ...This header MUST be included in the response....Required headers with security sensitivity (e.g., Authorization header) MIGHT NOT be appropriate as parameters...property.
'Content-Type' 'text/plain charset=UTF-8'; add_header 'Content-Length' 0; return...,Cache-Control,Content-Type'; } if ($request_method = 'GET') { add_header...,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; } } }...You can either disable the module by using --without-http-cache option, or install the OpenSSL library...5.4 报错4： 问题：执行 date命令 [root@xxxxx ~]# date Mon Dec 17 05:41:43 Local time zone must be set--see zic manual
//定义编码 header( 'Content-Type:text/html;charset=utf-8 '); //Atom header('Content-type: application/atom...//告诉浏览器最后一次修改时间 $time = time() - 60; // or filemtime($fn), etcheader('Last-Modified: '.gmdate('D, d M...GMT'); //告诉浏览器文档内容没有发生改变 header('HTTP/1.1 304 Not Modified'); //设置内容长度 header('Content-Length: 1234')...('example.zip'); // 对当前文档禁用缓存 header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate')...=utf-8'); header('Content-Type: text/plain'); //纯文本格式 header('Content-Type: image/jpeg'); //JPG*** header
en'); //告诉浏览器最后一次修改时间 $time = time() - 60; // or filemtime($fn), etc header('Last-Modified: '.gmdate...GMT'); //告诉浏览器文档内容没有发生改变 header('HTTP/1.1 304 Not Modified'); //设置内容长度 header('Content-Length: 1234...readfile('example.zip'); // 对当前文档禁用缓存 header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate...; charset=utf-8'); header('Content-Type: text/plain'); //纯文本格式 header('Content-Type: image/jpeg');...//JPG图片 header('Content-Type: application/zip'); // ZIP文件 header('Content-Type: application/pdf');
php中利用header设置content-type和常见文件类型的content-type 在PHP中可以通过header函数来发送头信息，还可以设置文件的content-type，下面整理了一些常见文件类型对于的...'); //告诉浏览器最后一次修改时间 $time = time() - 60; // or filemtime($fn), etc header('Last-Modified: '.gmdate('...GMT'); //告诉浏览器文档内容没有发生改变 header('HTTP/1.1 304 Not Modified'); //设置内容长度 header('Content-Length: 1234...('example.zip'); // 对当前文档禁用缓存 header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'...=utf-8'); header('Content-Type: text/plain'); //纯文本格式 header('Content-Type: image/jpeg'); //JPG*** header
PHP header 的7种用法 1. 跳转页面 1 header('Location:'.$url); //Location和":"之间无空格。 2....声明content-type 1 header('content-type:text/html;charset=utf-8'); 3....控制浏览器缓存 1 2 3 4 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Last-Modified: " . gmdate("..."GMT"); header("Cache-Control: no-cache, must-revalidate"); header("Pragma: no-cache"); 6. ....执行下载操作 1 2 3 4 header('Content-Type: application/octet-stream'); //设置内容类型 header('Content-Disposition
领取专属 10元无门槛券
手把手带您无忧上云
云服务器
ICP备案
实时音视频
即时通信 IM
对象存储
