header

判断客户端编码

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public static function get_os($agent = null) {
if (!$agent) $agent = $_SERVER['HTTP_USER_AGENT'];
if (preg_match('/win/i', $agent) && preg_match('/nt 6.0/i', $agent)) {
$os = 'Windows Vista';
} else if (preg_match('/win/i', $agent) && preg_match('/nt 6.1/i', $agent)) {
$os = 'Windows 7';
} else if (preg_match('/win/i', $agent) && preg_match('/nt 6.2/i', $agent)) {
$os = 'Windows 8';
} else if (preg_match('/win/i', $agent) && preg_match('/nt 10.0/i', $agent)) {
$os = 'Windows 10';# 添加win10判断
} else if (preg_match('/win/i', $agent) && preg_match('/nt 5.1/i', $agent)) {
$os = 'Windows XP';
} else if (preg_match('/win/i', $agent) && preg_match('/nt 5/i', $agent)) {
$os = 'Windows 2000';
} else if (preg_match('/win/i', $agent) && preg_match('/nt/i', $agent)) {
$os = 'Windows NT';
} else if (preg_match('/win/i', $agent) && preg_match('/32/i', $agent)) {
$os = 'Windows 32';
} else if (preg_match('/linux/i', $agent)) {
$os = 'Linux';
} else if (preg_match('/unix/i', $agent)) {
$os = 'Unix';
} else if (preg_match('/sun/i', $agent) && preg_match('/os/i', $agent)) {
$os = 'SunOS';
} else if (preg_match('/ibm/i', $agent) && preg_match('/os/i', $agent)) {
$os = 'IBM OS/2';
} else if (preg_match('/Mac/i', $agent)) {
$os = 'Macintosh';
} else if (preg_match('/PowerPC/i', $agent)) {
$os = 'PowerPC';
} else if (preg_match('/AIX/i', $agent)) {
$os = 'AIX';
} else if (preg_match('/HPUX/i', $agent)) {
$os = 'HPUX';
} else if (preg_match('/NetBSD/i', $agent)) {
$os = 'NetBSD';
} else if (preg_match('/BSD/i', $agent)) {
$os = 'BSD';
} else if (preg_match('/OSF1/i', $agent)) {
$os = 'OSF1';
} else if (preg_match('/IRIX/i', $agent)) {
$os = 'IRIX';
} else if (preg_match('/FreeBSD/i', $agent)) {
$os = 'FreeBSD';
} else if (preg_match('/teleport/i', $agent)) {
$os = 'teleport';
} else if (preg_match('/flashget/i', $agent)) {
$os = 'flashget';
} else if (preg_match('/webzip/i', $agent)) {
$os = 'webzip';
} else if (preg_match('/offline/i', $agent)) {
$os = 'offline';
} else {
$os = '未知操作系统';
}
return $os;
}

页面输出

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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.form1.cn/'); //跳转到一个新的地址
header('Refresh: 10; url=http://www.form1.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

内容输出

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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

声明一个下载文件

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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

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header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); 
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');

身份认证

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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

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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');

download

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header("Content-type: application/force-download");
// 判断编码
$use_utf_8 = Utils::get_os() == 'Macintosh';
if (!$use_utf_8) {
// Disposition中文是处置的意思, 可以理解为文档如何处置
header("Content-Disposition: attachment;filename=" . iconv("utf-8", "gb2312//IGNORE", $zip_title) . ".zip");
} else {
header("Content-Disposition: attachment;filename=" . $zip_title . ".zip");
}
echo file_get_contents($zip_path);