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php在线文件与文件夹压缩实例代码_PHP教程

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Jul 20, 2016 am 11:07 AM

php与代码压缩在线实例教程文件文件夹要

注明这款php教程文件压缩代码他要借助于zip.exe文件哦，所以我们要把zip.exe压缩文件给拿出来哦。

if ( !IsSet($_GET['dirname']) )
{
show_input_form() ;
}
else
{
// check if empty
if ( empty($_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 "

n"
 . "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"
 . "n"
 . "n"
 . "

n" ;
echo "<script>n" . "input.dirname.focus();n" . "function show_download_link(dir)n" . "{" . " var top = (screen.height-200)/2 ;n" . " var left = (screen.width-300)/2 ;n" . " newwin=window.open('', '', 'width=300,height=200,top=' + top + ',left=' + left + ', resizable=0,scrollbars=auto');n" . " url = "{$_SERVER['PHP_SELF']}" + "?dirname=" + dir ;n" . " newwin.document.write('<a href=' + url + '>点击此链接下载， 或者右键点击此处选择"另存为"');n" . "}" . "</script>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 "nn
n"
 . "n"
 . "