
PHP header 的7种用法
1. 跳转页面
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header( 'Location:' . $url );
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2. 声明content-type
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header( 'content-type:text/html;charset=utf-8' );
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3. 返回response状态码
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header( 'HTTP/1.1 404 Not Found' );
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4. 在某个时间后执行跳转
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header( 'Refresh: 10; url=http://www.baidu.com/' ); //10s后跳转。
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5. 控制浏览器缓存
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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" );
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6. . 执行http验证
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header( 'HTTP/1.1 401 Unauthorized' );
header( 'WWW-Authenticate: Basic realm="Top Secret"' );
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7. 执行下载操作
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header( 'Content-Type: application/octet-stream' );
header( 'Content-Disposition: attachment; filename="example.zip"' );
header( 'Content-Transfer-Encoding: binary' );
header( 'Content-Length: ' . filesize ( 'example.zip' ));
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