php 文件在线解压代码_PHP教程

public function ExtractFile($header,$to,$zip) {
$header = $this->readfileheader($zip);

if (substr($to,-1)!="//m.sbmmt.com/m/") $to.="//m.sbmmt.com/m/";
if ($to=='./') $to = '';
$pth = explode("//m.sbmmt.com/m/",$to.$header['filename']);
$mydir = '';
for($i=0;$i if (!$pth[$i]) continue;
$mydir .= $pth[$i]."//m.sbmmt.com/m/";
if ((!is_dir($mydir) && @mkdir($mydir,0777)) || (($mydir==$to.$header['filename'] || ($mydir==$to && $this->total_folders==0)) && is_dir($mydir)) ) {
@chmod($mydir,0777);
$this->total_folders ++;
echo 'Extract : ',$mydir,'
';
}
}

if (strrchr($header['filename'],'//m.sbmmt.com/m/')=='//m.sbmmt.com/m/') return;
if (!($header['external']==0x41FF0010)&&!($header['external']==16)) {
if ($header['compression']==0) {
$fp = @fopen($to.$header['filename'], 'wb');
if (!$fp) return(-1);
$size = $header['compressed_size'];
while ($size != 0) {
$read_size = ($size < 2048 ? $size : 2048);
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
fclose($fp);
touch($to.$header['filename'], $header['mtime']);
} else {
$fp = @fopen($to.$header['filename'].'.gz','wb');
if (!$fp) return(-1);
$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
Chr(0x00), time(), Chr(0x00), Chr(3));

fwrite($fp, $binary_data, 10);
$size = $header['compressed_size'];

while ($size != 0) {
$read_size = ($size < 1024 ? $size : 1024);
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}

$binary_data = pack('VV', $header['crc'], $header['size']);
fwrite($fp, $binary_data,8); fclose($fp);

$gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("Cette archive est compress