php 文件下载方法
来源：程序员人生 发布时间：2013-10-24 19:41:17 阅读次数：2986次
文章也很简单我们只要用利用head发送头部信息就能实现把文件下载到本地了,有直接发送header信息也有把文件保存在服务器上再用header来发送哦，有需要的朋友参考下。
用的是表头方式下载,代码如下:
- Header( "Content-type:application/octet-stream ");
- Header( "Accept-Ranges:bytes ");
- Header( "Accept-Length:".filesize($file_dir.$file_name));
- Header( "Content-Disposition:attachment;filename= ".$file_name);
判断文件存在再下载代码如下：
- <?php
- if( isset( $_REQUEST["download"] ) )
- {
- $tfile = $_REQUEST["download"];
-
- if (file_exists($tfile))
- {
- $downfilename=substr($tfile,strrpos($tfile, "/")+1);
-
-
- header( "Content-type: application/octet-streamn" );
- header( "Content-disposition: attachment; filename=$downfilenamen" );
- header( "Content-transfer-encoding: binaryn");
- header( "Content-length: " . @filesize($tfile ) . "n" );
-
- $fp = @fopen( $tfile, "r" );
- @fpassthru( $fp );
- @fclose( $fp );
- }
-
- exit();
- }
- ?>
pdf文件下载,代码如下：
- <?php
- $filename = $_SERVER['DOCUMENT_ROOT'] . "/path/to/file/my_file.pdf";
- header("Cache-Control: public");
- header("Content-Description: File Transfer");
- header('Content-disposition: attachment; filename='.basename($filename));
- header("Content-Type: application/pdf");
- ?>
下面讲讲header中的Content-type,不同的下载文件,对应不同的content-type,下面是大全：
- {
- 'ez' => 'application/andrew-inset',
- 'hqx' => 'application/mac-binhex40',
- 'cpt' => 'application/mac-compactpro',
- 'doc' => 'application/msword',
- 'bin' => 'application/octet-stream',
- 'dms' => 'application/octet-stream',
- 'lha' => 'application/octet-stream',
- 'lzh' => 'application/octet-stream',
- 'exe' => 'application/octet-stream',
- 'class' => 'application/octet-stream',
- 'so' => 'application/octet-stream',
- 'dll' => 'application/octet-stream',
- 'oda' => 'application/oda',
- 'pdf' => 'application/pdf',
- 'ai' => 'application/postscript',
- 'eps' => 'application/postscript',
- 'ps' => 'application/postscript',
- 'smi' => 'application/smil',
- 'smil' => 'application/smil',
- 'mif' => 'application/vnd.mif',
- 'xls' => 'application/vnd.ms-excel',
- 'ppt' => 'application/vnd.ms-powerpoint',
- 'wbxml' => 'application/vnd.wap.wbxml',
- 'wmlc' => 'application/vnd.wap.wmlc',
- 'wmlsc' => 'application/vnd.wap.wmlscriptc',
- 'bcpio' => 'application/x-bcpio',
- 'vcd' => 'application/x-cdlink',
- 'pgn' => 'application/x-chess-pgn',
- 'cpio' => 'application/x-cpio',
- 'csh' => 'application/x-csh',
- 'dcr' => 'application/x-director',
- 'dir' => 'application/x-director',
- 'dxr' => 'application/x-director',
- 'dvi' => 'application/x-dvi',
- 'spl' => 'application/x-futuresplash',
- 'gtar' => 'application/x-gtar',
- 'hdf' => 'application/x-hdf',
- 'js' => 'application/x-javascript',
- 'skp' => 'application/x-koan',
- 'skd' => 'application/x-koan',
- 'skt' => 'application/x-koan',
- 'skm' => 'application/x-koan',
- 'latex' => 'application/x-latex',
- 'nc' => 'application/x-netcdf',
- 'cdf' => 'application/x-netcdf',
- 'sh' => 'application/x-sh',
- 'shar' => 'application/x-shar',
- 'swf' => 'application/x-shockwave-flash',
- 'sit' => 'application/x-stuffit',
- 'sv4cpio' => 'application/x-sv4cpio',
- 'sv4crc' => 'application/x-sv4crc',
- 'tar' => 'application/x-tar',
- 'tcl' => 'application/x-tcl',
- 'tex' => 'application/x-tex',
- 'texinfo' => 'application/x-texinfo',
- 'texi' => 'application/x-texinfo',
- 't' => 'application/x-troff',
- 'tr' => 'application/x-troff',
- 'roff' => 'application/x-troff',
- 'man' => 'application/x-troff-man',
- 'me' => 'application/x-troff-me',
- 'ms' => 'application/x-troff-ms',
- 'ustar' => 'application/x-ustar',
- 'src' => 'application/x-wais-source',
- 'xhtml' => 'application/xhtml+xml',
- 'xht' => 'application/xhtml+xml',
- 'zip' => 'application/zip',
- 'au' => 'audio/basic',
- 'snd' => 'audio/basic',
- 'mid' => 'audio/midi',
- 'midi' => 'audio/midi',
- 'kar' => 'audio/midi',
- 'mpga' => 'audio/mpeg',
- 'mp2' => 'audio/mpeg',
- 'mp3' => 'audio/mpeg',
- 'aif' => 'audio/x-aiff',
- 'aiff' => 'audio/x-aiff',
- 'aifc' => 'audio/x-aiff',
- 'm3u' => 'audio/x-mpegurl',
- 'ram' => 'audio/x-pn-realaudio',
- 'rm' => 'audio/x-pn-realaudio',
- 'rpm' => 'audio/x-pn-realaudio-plugin',
- 'ra' => 'audio/x-realaudio',
- 'wav' => 'audio/x-wav',
- 'pdb' => 'chemical/x-pdb',
- 'xyz' => 'chemical/x-xyz',
- 'bmp' => 'image/bmp',
- 'gif' => 'image/gif',
- 'ief' => 'image/ief',
- 'jpeg' => 'image/jpeg',
- 'jpg' => 'image/jpeg',
- 'jpe' => 'image/jpeg',
- 'png' => 'image/png',
- 'tiff' => 'image/tiff',
- 'tif' => 'image/tiff',
- 'djvu' => 'image/vnd.djvu',
- 'djv' => 'image/vnd.djvu',
- 'wbmp' => 'image/vnd.wap.wbmp',
- 'ras' => 'image/x-cmu-raster',
- 'pnm' => 'image/x-portable-anymap',
- 'pbm' => 'image/x-portable-bitmap',
- 'pgm' => 'image/x-portable-graymap',
- 'ppm' => 'image/x-portable-pixmap',
- 'rgb' => 'image/x-rgb',
- 'xbm' => 'image/x-xbitmap',
- 'xpm' => 'image/x-xpixmap',
- 'xwd' => 'image/x-xwindowdump',
- 'igs' => 'model/iges',
- 'iges' => 'model/iges',
- 'msh' => 'model/mesh',
- 'mesh' => 'model/mesh',
- 'silo' => 'model/mesh',
- 'wrl' => 'model/vrml',
- 'vrml' => 'model/vrml',
- 'css' => 'text/css',
- 'html' => 'text/html',
- 'htm' => 'text/html',
- 'asc' => 'text/plain',
- 'txt' => 'text/plain',
- 'rtx' => 'text/richtext',
- 'rtf' => 'text/rtf',
- 'sgml' => 'text/sgml',
- 'sgm' => 'text/sgml',
- 'tsv' => 'text/tab-separated-values',
- 'wml' => 'text/vnd.wap.wml',
- 'wmls' => 'text/vnd.wap.wmlscript',
- 'etx' => 'text/x-setext',
- 'xsl' => 'text/xml',
- 'xml' => 'text/xml',
- 'mpeg' => 'video/mpeg',
- 'mpg' => 'video/mpeg',
- 'mpe' => 'video/mpeg',
- 'qt' => 'video/quicktime',
- 'mov' => 'video/quicktime',
- 'mxu' => 'video/vnd.mpegurl',
- 'avi' => 'video/x-msvideo',
- 'movie' => 'video/x-sgi-movie',
- 'ice' => 'x-conference/x-cooltalk',
- }
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