php实现文件在线压缩功能
<?php
class ZipAllFloder{
var $cachelist = array();
var $datasec = array();
var $ctrl_dir = array();
var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
var $old_offset = 0;
function StartWork($dir){
$result = $this->GetList($dir);
$this->ClearCache();
return $result;
}
function ReadAndExport($filelist,$zipfilename){
if (count($filelist)>0){
foreach($filelist as $filename){
if (is_file($filename)){
$fp = fopen ($filename, "r");
$content = @fread ($fp,filesize($filename));
fclose ($fp);
$filename = basename($filename);
$this -> addFile($content, $filename);
}
}
}else{
$this -> addFile("This folder have none a single file!","nofile.log");
}
$out = $this -> outfile();
$this -> IniVars();
$fp = fopen($zipfilename,"w");
fwrite($fp,$out,strlen($out));
fclose($fp);
$this -> cachelist[] = $zipfilename;
}
function GetList($dir){
if (file_exists($dir)){
$handle = opendir($dir);
while($files = readdir($handle)){
if (($files==".")||($files=="..")) continue;
if(is_dir($dir."/".$files)){
$this -> GetList($dir."/".$files);
}else{
$filelist[] = $dir."/".$files;
}
}
closedir($handle);
$zipfilename = dirname($dir)."/[FOLDER]".basename($dir).".zip";
$this -> ReadAndExport($filelist,$zipfilename);
}
return $zipfilename;
}
function ClearCache(){
if($num = count($this ->cachelist)){
for($i=0;$i<$num-1;$i++){
@unlink($this ->cachelist[$i]);
}
}
}
function IniVars(){
$this -> datasec = array();
$this -> ctrl_dir = array();
$this -> eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
$this -> old_offset = 0;
}
function unix2DosTime($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 outfile(){
$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";
}
}
$zip = new ZipAllFloder();
$str = $zip->StartWork("./baby");
echo $str;
?>
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