php 常见 header 用法说明
最常见的php header编码
header("Content-type: text/html; charset=utf-8");
301 重定向 (redirect):
<?php
header('HTTP/1.1 301 Moved Permanently');
header('Location: http://tqybw.net');
die();
?>
302 跳转(redirect):
<?php
header('Location: http://tqybw.net');
die();
?>
404 错误提示:
<?php
header('HTTP/1.1 404 Not Found');
?>
服务器报错:
<?php
header('HTTP/1.1 503 Service Temporarily Unavailable');
header('Status: 503 Service Temporarily Unavailable');
header('Retry-After: 60');
?>
输出格式申明：
CSS:
<?php
header('Content-Type: text/css');
?>
Javascript header:
<?php
header('Content-Type: application/javascript');
?>
Images:
For JPEG(jpg):
<?php
header('Content-Type: image/jpeg');
?>
For PNG:
<?php
header('Content-Type: image/png');
?>
For BMP:
<?php
header('Content-Type: image/bmp');
?>
PDF (output pdf with php):
<?php
header('Content-Type: application/pdf');
echo file_get_contents('filename.pdf');
?>
使用缓布申明：Cache (force browsers not to cache files):
<?php
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: pre-check=0, post-check=0, max-age=0');
header ('Pragma: no-cache');
?>
Authentication (force the browser to pop up a Username/Password input window) - only available when PHP is running as an Apache module:
<?php
if (!isset($_SERVER['PHP_AUTH_USER'])) {
header('WWW-Authenticate: Basic realm="The Realm"');
header('HTTP/1.0 401 Unauthorized');
echo 'If cancel is pressed this text shows';
die();
} else {
//always escape your data//
$user='user';
$pass='pass';
if($_SERVER['PHP_AUTH_USER']==$user && $_SERVER['PHP_AUTH_PW']==$pass){
echo 'Authorized';
}
}
?>
文件下载 Download dialog:
<?php
header('Content-Disposition: attachment; filename=' . urlencode($f));
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream');
header('Content-Type: application/download');
header('Content-Description: File Transfer');
header('Content-Length: ' . filesize($f));
echo file_get_contents($f);
?>