A PHP Zip compression class sharing _php Tutorial

Function: Compress the file into zip, or RAR archive package. The suffix name can be customized.

How to use: First instantiate, then pass the argument. Two parameters. First an array of your file addresses. The second is the absolute address of the compressed package file that you want to save.

Examples of Use:
Copy the Code code as follows:
$zipfiles =array ("/root/pooy/test1.txt", "/root/pooy/test2.txt");
$z = new Phpzip ();
$RANDOMSTR = random (8);
$zipfile = TEMP. " /photocome_ ". $groupid.". Zip ";
$z->zip ($zipfiles, $zipfile); Add File List

The zip compression class for PHP is as follows:

Copy CodeThe code is as follows:
#
# 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
#
#
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 a Unix timestamp to a four byte DOS date and time format (date
* In high and bytes, time in low, 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 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]
Western Union Point. ' \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 are 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.
Eof_ctrl_dir, $this.
Pack (' V ', sizeof ($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 the central Dir
"\x00\x00"; . zip file Comment length
}//end of the ' file () ' method

}//End of the ' Phpzip ' class
?>

http://www.bkjia.com/PHPjc/764618.html www.bkjia.com true http://www.bkjia.com/PHPjc/764618.html techarticle function: Compress the file into zip, or RAR archive package. The suffix name can be customized. How to use: First instantiate, then pass the argument. Two parameters. The first one about your file address ...

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