PHP必知必会-常用http头

404
header('HTTP/1.1 404 Not Found');
 
301,302
#firefox中有时会缓存301跳转所以加上了缓存过期
header("Expires: Mon, 26 Jul 2016 03:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")."GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
header('HTTP/1.1 301 Moved Permanently');
header('Location: '.$url,true,301);
 
附件下载
header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
header("Content-Description: File Transfer");
header ("Content-type: application/octet-stream");
header ("Content-Length: " .filesize ($f_name));
header ("Content-Disposition: attachment; filename=" . basename($f_name));
readfile($f_name);
 
PHPExcel下载
$filename='月度统计'.$date.'.xlsx';
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header('Content-Disposition:inline;filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary");
header("Expires: Mon, 26 Jul 2016 03:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Pragma: no-cache");
$objWriter->save('php://output');
 
Excel
header('Content-Type: application/vnd.ms-excel');
header("Content-Disposition:attachment; filename=demo.xls");
header('Cache-Control: max-age=0');