{"id":205,"date":"2011-11-21T01:15:56","date_gmt":"2011-11-21T01:15:56","guid":{"rendered":"eae27d77ca20db309e056e3d2dcd7d69"},"modified":"2011-11-21T01:15:56","modified_gmt":"2011-11-21T01:15:56","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/205","title":{"rendered":"PHP Headers Examples - 301,302, Redirects, 404, Javascript, Download, Authentication dialog Headers"},"content":{"rendered":"

301 moved permanently (redirect):<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'HTTP\/1.1 301 Moved Permanently'<\/span>);
\n<\/span>header<\/span>(<\/span>'Location: http:\/\/www.example.com'<\/span>);
\ndie();
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>302 moved temporarily(redirect):<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'Location: http:\/\/www.example.com'<\/span>);
\ndie();
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>404 Page Not Found:<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'HTTP\/1.1 404 Not Found'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Service not avaliable:<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'HTTP\/1.1 503 Service Temporarily Unavailable'<\/span>);
\n<\/span>header<\/span>(<\/span>'Status: 503 Service Temporarily Unavailable'<\/span>);
\n<\/span>header<\/span>(<\/span>'Retry-After: 60'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>CSS:<\/b> 
\n<?php
\nheader<\/span>(<\/span>'Content-Type: text\/css'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Javascript header:<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'Content-Type: application\/javascript'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Images:<\/b>
\nFor JPEG(jpg): 
\n<?php 
\nheader<\/span>(<\/span>'Content-Type: image\/jpeg'<\/span>);
\n<\/span>?><\/span> <\/span><\/code>
\nFor PNG: 
\n<?php 
\nheader<\/span>(<\/span>'Content-Type: image\/png'<\/span>);
\n<\/span>?><\/span> <\/span><\/code>
\nFor BMP: 
\n<?php 
\nheader<\/span>(<\/span>'Content-Type: image\/bmp'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>PDF (output pdf with php):<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'Content-Type: application\/pdf'<\/span>);
\necho <\/span>file_get_contents<\/span>(<\/span>'filename.pdf'<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Cache (force browsers not to cache files):<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'Expires: Sat, 26 Jul 1997 05:00:00 GMT'<\/span>);
\n<\/span>header<\/span>(<\/span>'Cache-Control: no-store, no-cache, must-revalidate'<\/span>);
\n<\/span>header<\/span>(<\/span>'Cache-Control: pre-check=0, post-check=0, max-age=0'<\/span>);
\n<\/span>header <\/span>(<\/span>'Pragma: no-cache'<\/span>); 
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Download dialog:<\/b> 
\n<?php 
\nheader<\/span>(<\/span>'Content-Disposition: attachment; filename=' <\/span>. <\/span>urlencode<\/span>(<\/span>$f<\/span>));   
\n<\/span>header<\/span>(<\/span>'Content-Type: application\/force-download'<\/span>);
\n<\/span>header<\/span>(<\/span>'Content-Type: application\/octet-stream'<\/span>);
\n<\/span>header<\/span>(<\/span>'Content-Type: application\/download'<\/span>);
\n<\/span>header<\/span>(<\/span>'Content-Description: File Transfer'<\/span>);            
\n<\/span>header<\/span>(<\/span>'Content-Length: ' <\/span>. <\/span>filesize<\/span>(<\/span>$f<\/span>));
\necho <\/span>file_get_contents<\/span>(<\/span>$f<\/span>);
\n<\/span>?><\/span> <\/span><\/code><\/p>\n

<\/a>Authentication (force the browser to pop up a Username\/Password input window) - only available when PHP is running as an Apache module:<\/b> 
\n<?php
\n<\/span>if (!isset(<\/span>$_SERVER<\/span>[<\/span>'PHP_AUTH_USER'<\/span>])) {
\n    <\/span>header<\/span>(<\/span>'WWW-Authenticate: Basic realm=\"The Realm\"'<\/span>);
\n    <\/span>header<\/span>(<\/span>'HTTP\/1.0 401 Unauthorized'<\/span>);
\n    echo <\/span>'If cancel is pressed this text shows'<\/span>;
\n    die();
\n} else {
\n<\/span>\/\/always escape your data\/\/
\n<\/span>$user<\/span>=<\/span>'user'<\/span>;
\n<\/span>$pass<\/span>=<\/span>'pass'<\/span>;
\n   if(<\/span>$_SERVER<\/span>[<\/span>'PHP_AUTH_USER'<\/span>]==<\/span>$user <\/span>&& <\/span>$_SERVER<\/span>[<\/span>'PHP_AUTH_PW'<\/span>]==<\/span>$pass<\/span>){
\n    echo <\/span>'Authorized'<\/span>;
\n}
\n}
\n<\/span><\/span><\/code><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

301 moved permanently (redirect):<\/b> 
<?php 
\nheader<\/span>(<\/span>'HTTP\/1.1 301 Moved Permanently'<\/span>);
<\/span>header<\/span>(<\/span>'Location: http:\/\/www.example.com'<\/span>);
\ndie();
<\/span>?><\/span> <\/span><\/code><\/p>\n

302 moved temporarily(redirect):<\/b> 
<?php 
\nheader<\/span>(<\/span>'Location: http:\/\/www.example.com'<\/span>);
\ndie();
<\/span>?><\/span>&...<\/span><\/code><\/span> \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[273],"tags":[27],"class_list":["post-205","post","type-post","status-publish","format-standard","hentry","category-article","tag-php"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=205"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/205\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}