[Resolvido] Zipar pasta com arquivos

um Salve a todos,

tenho algumas duvidas sobre zipar uma pasta com arquivos.

tem um exemplo interessante no site da zend.

http://www.zend.com//code/codex.php?ozid=696&single=1

// só queria que ela add todos os arquivos de dentro da pasta, para serem zipados.

classe zipfile

<?php

/*

Zip file creation class
makes zip files on the fly...

use the functions add_dir() and add_file() to build the zip file;
see example code below

by Eric Mueller
http://www.themepark.com

v1.1 9-20-01
- added comments to example

v1.0 2-5-01

initial version with:
- class appearance
- add_file() and file() methods
- gzcompress() output hacking
by Denis O.Philippov, webmaster@atlant.ru, http://www.atlant.ru

*/

// official ZIP file format: http://www.pkware.com/appnote.txt

class zipfile
{

 var $datasec = array(); // array to store compressed data
 var $ctrl_dir = array(); // central directory
 var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00"; //end of Central directory record
 var $old_offset = 0;

 function add_dir($name)

 // adds "directory" to archive - do this before putting any files in directory!
 // $name - name of directory... like this: "path/"
 // ...then you can add files using add_file with names like "path/file.txt"
 {
 $name = str_replace("\", "/", $name);

 $fr = "x50x4bx03x04";
 $fr .= "x0ax00"; // ver needed to extract
 $fr .= "x00x00"; // gen purpose bit flag
 $fr .= "x00x00"; // compression method
 $fr .= "x00x00x00x00"; // last mod time and date

 $fr .= pack("V",0); // crc32
 $fr .= pack("V",0); //compressed filesize
 $fr .= pack("V",0); //uncompressed filesize
 $fr .= pack("v", strlen($name) ); //length of pathname
 $fr .= pack("v", 0 ); //extra field length
 $fr .= $name;
 // end of "local file header" segment

 // no "file data" segment for path

 // "data descriptor" segment (optional but necessary if archive is not served as file)
 $fr .= pack("V",$crc); //crc32
 $fr .= pack("V",$c_len); //compressed filesize
 $fr .= pack("V",$unc_len); //uncompressed filesize

 // add this entry to array
 $this -> datasec[] = $fr;

 $new_offset = strlen(implode("", $this->datasec));

 // ext. file attributes mirrors MS-DOS directory attr byte, detailed
 // at [http://support.microsoft.com/support/kb/articles/Q125/0/19.asp](http://support.microsoft.com/support/kb/articles/Q125/0/19.asp)

 // now add to central record
 $cdrec = "x50x4bx01x02";
 $cdrec .="x00x00"; // version made by
 $cdrec .="x0ax00"; // version needed to extract
 $cdrec .="x00x00"; // gen purpose bit flag
 $cdrec .="x00x00"; // compression method
 $cdrec .="x00x00x00x00"; // last mod time & date
 $cdrec .= pack("V",0); // crc32
 $cdrec .= pack("V",0); //compressed filesize
 $cdrec .= pack("V",0); //uncompressed filesize
 $cdrec .= pack("v", strlen($name) ); //length of filename
 $cdrec .= pack("v", 0 ); //extra field length
 $cdrec .= pack("v", 0 ); //file comment length
 $cdrec .= pack("v", 0 ); //disk number start
 $cdrec .= pack("v", 0 ); //internal file attributes
 $ext = "x00x00x10x00";
 $ext = "xffxffxffxff";
 $cdrec .= pack("V", 16 ); //external file attributes - 'directory' bit set

 $cdrec .= pack("V", $this -> old_offset ); //relative offset of local header
 $this -> old_offset = $new_offset;

 $cdrec .= $name;
 // optional extra field, file comment goes here
 // save to array
 $this -> ctrl_dir[] = $cdrec;

 }

 function add_file($data, $name)

 // adds "file" to archive
 // $data - file contents
 // $name - name of file in archive. Add path if your want

 {
 $name = str_replace("", "/", $name);
 //$name = str_replace("", "", $name);

 $fr = "x50x4bx03x04";
 $fr .= "x14x00"; // ver needed to extract
 $fr .= "x00x00"; // gen purpose bit flag
 $fr .= "x08x00"; // compression method
 $fr .= "x00x00x00x00"; // last mod time and date

 $unc_len = strlen($data);
 $crc = crc32($data);
 $zdata = gzcompress($data);
 $zdata = substr( substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
 $c_len = strlen($zdata);
 $fr .= pack("V",$crc); // crc32
 $fr .= pack("V",$c_len); //compressed filesize
 $fr .= pack("V",$unc_len); //uncompressed filesize
 $fr .= pack("v", strlen($name) ); //length of filename
 $fr .= pack("v", 0 ); //extra field length
 $fr .= $name;
 // end of "local file header" segment

 // "file data" segment
 $fr .= $zdata;

 // "data descriptor" segment (optional but necessary if archive is not served as file)
 $fr .= pack("V",$crc); //crc32
 $fr .= pack("V",$c_len); //compressed filesize
 $fr .= pack("V",$unc_len); //uncompressed filesize

 // add this entry to array
 $this -> datasec[] = $fr;

 $new_offset = strlen(implode("", $this->datasec));

 // now add to central directory record
 $cdrec = "x50x4bx01x02";
 $cdrec .="x00x00"; // version made by
 $cdrec .="x14x00"; // version needed to extract
 $cdrec .="x00x00"; // gen purpose bit flag
 $cdrec .="x08x00"; // compression method
 $cdrec .="x00x00x00x00"; // last mod time & date
 $cdrec .= pack("V",$crc); // crc32
 $cdrec .= pack("V",$c_len); //compressed filesize
 $cdrec .= pack("V",$unc_len); //uncompressed filesize
 $cdrec .= pack("v", strlen($name) ); //length of filename
 $cdrec .= pack("v", 0 ); //extra field length
 $cdrec .= pack("v", 0 ); //file comment length
 $cdrec .= pack("v", 0 ); //disk number start
 $cdrec .= pack("v", 0 ); //internal file attributes
 $cdrec .= pack("V", 32 ); //external file attributes - 'archive' bit set

 $cdrec .= pack("V", $this -> old_offset ); //relative offset of local header
// echo "old offset is ".$this->old_offset.", new offset is $new_offset<br>";
 $this -> old_offset = $new_offset;

 $cdrec .= $name;
 // optional extra field, file comment goes here
 // save to central directory
 $this -> ctrl_dir[] = $cdrec;
 }

 function file() { // dump out file
 $data = implode("", $this -> datasec);
 $ctrldir = implode("", $this -> ctrl_dir);

 return
 $data.
 $ctrldir.
 $this -> eof_ctrl_dir.
 pack("v", sizeof($this -> ctrl_dir)). // total # of entries "on this disk"
 pack("v", sizeof($this -> ctrl_dir)). // total # of entries overall
 pack("V", strlen($ctrldir)). // size of central dir
 pack("V", strlen($data)). // offset to start of central dir
 "x00x00"; // .zip file comment length
 }
}

?>

/// ------- zip.php

/// ta funcionando..

/// mas quero que ela zip a pasta e todos os arquivos dentro dela.

/// isso que ela não ta fazendo.

<?php

$zipfile = new zipfile();

// add the subdirectory ... important!
$zipfile -> add_dir("dir/");

// add the binary data stored in the string 'filedata'

$filedata = "(read your file into $filedata)";
$zipfile -> add_file($filedata, "dir/file.txt");

// the next three lines force an immediate download of the zip file:

header("Content-type: application/octet-stream");
header("Content-disposition: attachment; filename=test.zip");
echo $zipfile -> file();
?>

E ae galera?