Rumah > Artikel > pembangunan bahagian belakang > php在线文件与文件夹压缩实例代码_PHP教程
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 $szData ;
}n" ;
function show_input_form()
{
echo HtmlHead("文件打包") ;
echo "
echo "<script>n"<br /> . "input.dirname.focus();n"<br /> . "function show_download_link(dir)n"<br /> . "{"<br /> . " var top = (screen.height-200)/2 ;n"<br /> . " var left = (screen.width-300)/2 ;n"<br /> . " newwin=window.open('', '', 'width=300,height=200,top=' + top + ',left=' + left + ', resizable=0,scrollbars=auto');n"<br /> . " url = "{$_SERVER['PHP_SELF']}" + "?dirname=" + dir ;n"<br /> . " newwin.document.write('<a href=' + url + '>点击此链接下载,<br>或者右键点击此处选择"另存为"');n"<br /> . "}"<br /> . "</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 "" . $str . "
" ;
echo HtmlFoot() ;
exit ;
}n"
function HtmlHead($title)
{
return "nn
. "n"
. "