PHP - header()的用法 - 收集

「爱情、让人受尽委屈。」 2022-12-12 12:27 114阅读 0赞

1.应用场景

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 <td> 主要用于了解php header的用法. 设置响应头, 浏览器的响应方式. </td> 
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2.学习/操作

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 <td> 1. 跳转页面 header('Location:'.$url); //Location和":"之间无空格。 &nbsp; 2. 声明content-type header('content-type:text/html;charset=utf-8'); &nbsp; 3. 返回response状态码 header('HTTP/1.1 404 Not Found'); &nbsp; 4. 在某个时间后执行跳转 header('Refresh: 10; url=http://www.baidu.com/'); //10s后跳转。 &nbsp; 5. 控制浏览器缓存 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT"); header("Cache-Control: no-cache, must-revalidate"); header("Pragma: no-cache"); &nbsp; 6. 执行http验证 header('HTTP/1.1 401 Unauthorized'); header('WWW-Authenticate: Basic realm="Top Secret"'); &nbsp; 7. 执行下载操作 header('Content-Type: application/octet-stream'); //设置内容类型 header('Content-Disposition: attachment; filename="example.zip"'); //设置MIME用户作为附件 header('Content-Transfer-Encoding: binary'); //设置传输方式 header('Content-Length: '.filesize('example.zip')); //设置内容长度 &nbsp; &nbsp; 8. 设置cookie以及如samesite属性等 
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 if (PHP_VERSION_ID &lt; 70300) {&nbsp; &nbsp;&nbsp; &nbsp;setcookie('samesite-test', '1', 0, '/; samesite=strict'); } else { &nbsp;&nbsp; &nbsp;header('Set-Cookie: samesite-test=1; path=/; samesite=strict'); } 
 </blockquote> 截图: <img alt="" height="420" src="https://img-blog.csdnimg.cn/20210302160552515.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dpbGxpYW1fbg==,size_16,color_FFFFFF,t_70" width="1109"> &nbsp; 代码封装 
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 /** &nbsp;* Support samesite cookie flag in both php 7.2 (current production) and php &gt;= 7.3 (when we get there) &nbsp;* From: https://github.com/GoogleChromeLabs/samesite-examples/blob/master/php.md and https://stackoverflow.com/a/46971326/2308553&nbsp; &nbsp;* &nbsp;* @see https://www.php.net/manual/en/function.setcookie.php &nbsp;* &nbsp;* @param string $name &nbsp;* @param string $value &nbsp;* @param int $expire &nbsp;* @param string $path &nbsp;* @param string $domain &nbsp;* @param bool $secure &nbsp;* @param bool $httponly &nbsp;* @param string $samesite &nbsp;* @return void &nbsp;*/ function setCookieSameSite( &nbsp; &nbsp; string $name,&nbsp; &nbsp; &nbsp; string $value, &nbsp; &nbsp; int $expire,&nbsp; &nbsp; &nbsp; string $path,&nbsp; &nbsp; &nbsp; string $domain, &nbsp; &nbsp; bool $secure,&nbsp; &nbsp; &nbsp; bool $httponly,&nbsp; &nbsp; &nbsp; string $samesite = 'None' ): void { &nbsp; &nbsp; if (PHP_VERSION_ID &lt; 70300) { &nbsp; &nbsp; &nbsp; &nbsp; setcookie($name, $value, $expire, $path . '; samesite=' . $samesite, $domain, $secure, $httponly); &nbsp; &nbsp; &nbsp; &nbsp; return; &nbsp; &nbsp; } &nbsp; &nbsp; setcookie($name, $value, [ &nbsp; &nbsp; &nbsp; &nbsp; 'expires' =&gt; $expire, &nbsp; &nbsp; &nbsp; &nbsp; 'path' =&gt; $path, &nbsp; &nbsp; &nbsp; &nbsp; 'domain' =&gt; $domain, &nbsp; &nbsp; &nbsp; &nbsp; 'samesite' =&gt; $samesite, &nbsp; &nbsp; &nbsp; &nbsp; 'secure' =&gt; $secure, &nbsp; &nbsp; &nbsp; &nbsp; 'httponly' =&gt; $httponly, &nbsp; &nbsp; ]); } 
 </blockquote> &nbsp; &nbsp; &nbsp; 后续补充 ... </td> 
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3.问题/补充

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 <td> 1.为什么PHP无法输出特殊字符？ TBD &nbsp; 2.Header 中content-type的值设置 <a href="https://mp.csdn.net/editor/html/100046672" rel="nofollow">https://mp.csdn.net/editor/html/100046672</a>&nbsp;//&nbsp;PHP - 如何下载服务器上的文件 </td> 
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4.参考

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 <td> <a href="https://www.php.cn/php-weizijiaocheng-394656.html" rel="nofollow">https://www.php.cn/php-weizijiaocheng-394656.html</a>&nbsp; //PHP - header()的7种用法 <a href="https://mp.csdn.net/editor/html/100046672" rel="nofollow">https://mp.csdn.net/editor/html/100046672</a>&nbsp;//&nbsp;PHP - 如何下载服务器上的文件 <a href="https://stackoverflow.com/questions/39750906/php-setcookie-samesite-strict" rel="nofollow">https://stackoverflow.com/questions/39750906/php-setcookie-samesite-strict</a>&nbsp; //&nbsp;PHP setcookie “SameSite=Strict”? </td> 
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后续补充

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