php打包zip檔案，完整執行個體（附類，附調用方法），已經測試OK的

 

<?php
$z = new PHPZip();
$file = array('itokit.jpg');
$zipname = './itokit_com/' . time() . '.zip';
$z->Zip($file, $zipname);

/**
以下是其他調用這個類的方法：
$z = new PHPZip(); //建立立一個zip的類

方法一：
$z -> Zip("", "out1.zip"); //添加目前的目錄和子目錄下的所有檔案

方法二：
$files=array('1.txt','gb.txt');
$files[]='5.txt';
$z -> Zip($files, "out2.zip"); //添加檔案清單

方法三：
$z -> Zip("/usr/local/sext/", "out3.zip"); //添加指定目錄
*/

#
# PHPZip v1.2 by Sext (sext@neud.net) 2002-11-18
# (Changed: 2003-03-01)
#
# Makes zip archive
#
# Based on "Zip file creation class", uses zLib
#
# Examples in sample1.php, sample2.php and sample3.php
#

class PHPZip
{
function Zip($dir, $zipfilename)
{
if (@function_exists('gzcompress'))
{
$curdir = getcwd();
if (is_array($dir))
{
$filelist = $dir;
}
else
{
$filelist = $this -> GetFileList($dir);
}

if ((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir);
else chdir($curdir);

if (count($filelist)>0)
{
foreach($filelist as $filename)
{
if (is_file($filename))
{
$fd = fopen ($filename, "r");
$content = fread ($fd, filesize ($filename));
fclose ($fd);

if (is_array($dir)) $filename = basename($filename);
$this -> addFile($content, $filename);
}
}
$out = $this -> file();

chdir($curdir);
$fp = fopen($zipfilename, "w");
fwrite($fp, $out, strlen($out));
fclose($fp);
}
return 1;
}
else return 0;
}

function GetFileList($dir)
{
if (file_exists($dir))
{
$args = func_get_args();
$pref = $args[1];

$dh = opendir($dir);
while($files = readdir($dh))
{
if (($files!=".")&&($files!=".."))
{
if (is_dir($dir.$files))
{
$curdir = getcwd();
chdir($dir.$files);
$file = array_merge($file, $this -> GetFileList("", "$pref$files/"));
chdir($curdir);
}
else $file[]=$pref.$files;
}
}
closedir($dh);
}
return $file;
}

var $datasec      = array();
var $ctrl_dir     = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $old_offset   = 0;

/**
* Converts an Unix timestamp to a four byte DOS date and time format (date
* in high two bytes, time in low two bytes allowing magnitude comparison).
*
* @param integer the current Unix timestamp
*
* @return integer the current date in a four byte DOS format
*
* @access private
*/
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;
} // end if

return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
} // end of the 'unix2DosTime()' method

/**
* Adds "file" to archive
*
* @param string   file contents
* @param string   name of the file in the archive (may contains the path)
* @param integer the current timestamp
*
* @access public
*/
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   = "\x50\x4b\x03\x04";
$fr   .= "\x14\x00";            // ver needed to extract
$fr   .= "\x00\x00";            // gen purpose bit flag
$fr   .= "\x08\x00";            // compression method
$fr   .= $hexdtime;             // last mod time and date

// "local file header" segment
$unc_len = strlen($data);
$crc     = crc32($data);
$zdata   = gzcompress($data);
$c_len   = strlen($zdata);
$zdata   = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$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;

// "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 = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00";                // version made by
$cdrec .= "\x14\x00";                // version needed to extract
$cdrec .= "\x00\x00";                // gen purpose bit flag
$cdrec .= "\x08\x00";                // compression method
$cdrec .= $hexdtime;                 // 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
$this -> old_offset = $new_offset;

$cdrec .= $name;

// optional extra field, file comment goes here
// save to central directory
$this -> ctrl_dir[] = $cdrec;
} // end of the 'addFile()' method

/**
* Dumps out file
*
* @return string the zipped file
*
* @access public
*/
function 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
"\x00\x00";                             // .zip file comment length
} // end of the 'file()' method

} // end of the 'PHPZip' class