复制代码 代码如下:
<?php
/*
$Id: PHPZip.php
*/
class PHPZip {
var $datasec = array();
var $ctrl_dir = array();
var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
var $old_offset = 0;
function Zip($dir, $zipfilename) {
if (@function_exists("gzcompress")) {
@set_time_limit("0");
$this->openFile($dir,$dir);
$out = $this -> filezip();
$fp = fopen($zipfilename, "w");
fwrite($fp, $out, strlen($out));
fclose($fp);
}
}
function openFile($path, $zipName) {
$temp_path = $path;
$temp_zip_path = $zipName;
$zipDir = $zipName;
if ($handle = @opendir($path)) {
while (false !== ($file = readdir($handle))) {
if($file !="." and $file !=".."){
if(ereg("." , $file.@basename())) {
$fd = fopen($path."/".$file, "r");
$fileValue = @fread ($fd, 1024000);
fclose ($fd);
$this -> addFile($fileValue, $zipName . "/" . $file);
} else {
$this ->openFile($path."/".$file, $zipName . "/" . $file);
}
}
}
$zipName = $temp_zip_path;
$path = $temp_path;
closedir($handle);
}
}
function unix2DosTime($unixtime = 0) {
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
if ($timearray["year"] < 1980) {
$timearray["year"] = 1980;
$timearray["mon"] = 1;
$timearray["mday"] = 1;
$timearray["hours"] = 0;
$timearray["minutes"] = 0;
$timearray["seconds"] = 0;
}
return (($timearray["year"] - 1980) << 25) | ($timearray["mon"] << 21) | ($timearray["mday"] << 16) |
($timearray["hours"] << 11) | ($timearray["minutes"] << 5) | ($timearray["seconds"] >> 1);
}
function addFile($data, $name, $time = 0) {
$name = str_replace("\", "/", $name);
$dtime = dechex($this->unix2DosTime($time));
$hexdtime = "x" . $dtime[6] . $dtime[7]
. "x" . $dtime[4] . $dtime[5]
. "x" . $dtime[2] . $dtime[3]
. "x" . $dtime[0] . $dtime[1];
eval("$hexdtime = "" . $hexdtime . "";");
$fr = "x50x4bx03x04";
$fr .= "x14x00";
$fr .= "x00x00";
$fr .= "x08x00";
$fr .= $hexdtime;
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
$fr .= pack("V", $crc);
$fr .= pack("V", $c_len);
$fr .= pack("V", $unc_len);
$fr .= pack("v", strlen($name));
$fr .= pack("v", 0);
$fr .= $name;
$fr .= $zdata;
$fr .= pack("V", $crc);
$fr .= pack("V", $c_len);
$fr .= pack("V", $unc_len);
$this -> datasec[] = $fr;
$new_offset = strlen(implode("", $this->datasec));
$cdrec = "x50x4bx01x02";
$cdrec .= "x00x00";
$cdrec .= "x14x00";
$cdrec .= "x00x00";
$cdrec .= "x08x00";
$cdrec .= $hexdtime;
$cdrec .= pack("V", $crc);
$cdrec .= pack("V", $c_len);
$cdrec .= pack("V", $unc_len);
$cdrec .= pack("v", strlen($name) );
$cdrec .= pack("v", 0 );
$cdrec .= pack("v", 0 );
$cdrec .= pack("v", 0 );
$cdrec .= pack("v", 0 );
$cdrec .= pack("V", 32 );
$cdrec .= pack("V", $this -> old_offset );
$this -> old_offset = $new_offset;
$cdrec .= $name;
$this -> ctrl_dir[] = $cdrec;
}
function filezip() {
$data = implode("", $this -> datasec);
$ctrldir = implode("", $this -> ctrl_dir);
return
$data .
$ctrldir .
$this -> eof_ctrl_dir .
pack("v", sizeof($this -> ctrl_dir)) .
pack("v", sizeof($this -> ctrl_dir)) .
pack("V", strlen($ctrldir)) .
pack("V", strlen($data)) .
"x00x00";
}
}
?>