php在线文件与文件夹压缩实例代码
注明这款php文件压缩代码他要借助于zip.exe文件,所以我们要把zip.exe压缩文件给拿出来,实例代码如下:
- if ( !IsSet($_GET['dirname']) )
- {
- show_input_form() ;
- }
- else
- {
- // check if empty
- if ( emptyempty($_GET['dirname']) )
- {
- hg_exit("请输入文件夹名!") ;
- }
- // check valid dirname
- if ( FALSE !== strpos($_GET['dirname'], "/") )
- {
- hg_exit(""/" 是非法的文件夹名!") ;
- }
- if ( FALSE !== strstr($_GET['dirname'], "..") )
- {
- hg_exit("".." 是非法的文件夹名!") ;
- }
- // check valid dir
- if ( !is_dir($_GET['dirname']) )
- {
- hg_exit(""{$_GET['dirname']}" 不是一个有效的文件夹!") ;
- }
- $szData = "" ;
- $szInfo = "" ;
- $file_count = @ZipDir($_GET['dirname'], &$szData, &$szInfo) ;
- $info_size_16byte = @sprintf("%016d", @strlen($szInfo)) ;
- $szData = @sprintf("%016d",$file_count) . $info_size_16byte . $szInfo . $szData ;
- $filename = $_GET['dirname'] . ".dat" ;
- if ( function_exists(gzencode) )
- {
- $szData = gzencode($szData) ;
- $filename .= ".gz" ;
- }
- Header("Content-type: application/octet-stream");
- Header("Accept-Ranges: bytes");
- Header("Accept-Length: " . strlen($szData));
- Header("Content-Disposition: attachment; filename=$filename");
- echo $szData ;
- }
- function show_input_form()
- {
- echo HtmlHead("文件打包") ;
- echo "
- . "请输入要打包的文件夹,注意,仅当前目录下的文件夹才可以下载!
n"
- . "dirname">n"
- . "button" value="确定" onClick="show_download_link(dirname.value);">n"
- . "n" ;
- echo "n" ;
- echo HtmlFoot() ;
- }
- function ZipDir($szDirName, &$szData, &$szInfo)
- {
- // write dir header
- $szInfo .= "$szDirName|[dir]n" ;
- $file_count = 0 ;
- $hDir = OpenDir($szDirName) ;
- while ( $file = ReadDir($hDir) )
- {
- if ( $file=="." || $file==".." ) continue ;
- $szCurFile = "$szDirName/$file" ;
- if ( Is_Dir($szCurFile) )
- {
- $file_count += ZipDir($szCurFile, &$szData, &$szInfo) ;
- }
- else if ( Is_File($szCurFile) )
- {
- $hCurFile = fopen($szCurFile, "rb") ;
- $size = filesize($szCurFile) ;
- $szStream = fread( $hCurFile, $size ) ;
- fclose($hCurFile) ;
- $file_count++ ;
- // write info
- $szInfo .= "$szCurFile|$sizen" ;
- // write data
- $szData .= $szStream ;
- }
- }
- // write dir footer
- $szInfo .= "$szDirName|[/dir]n" ;
- return $file_count ;
- }
- function hg_exit($str)
- {
- echo HtmlHead("Error, exit!") ;
- echo "
"
. $str . "" ;- echo HtmlFoot() ;
- exit ;
- }
- function HtmlHead($title)
- {
- return "nnn"
- . "Content-Type" content="text/html; charset=gb2312">n"
- . "n"
- . "nnnn" ;
- }
- function HtmlFoot()
- {
- return Copyright() . "nnn" ;
- }
- function Copyright()
- {
- return "
5" face="楷体_GB2312" color="red">使用完请立即删除本文件,以避免被其它人发现使用! n"- . "
#003388">n"- . "
n" - . "
font-family:verdana; font-size:12px">Contact us: n"
- . "http://www.phpfensi.com/" target="_blank">http://www.phpfensi.com/n"
- . "n"
- . "