php 压缩文件 zip-白红宇

php 压缩文件 zip

阅读量：5936 次

发布时间：2019-06-19

本文共 16711 字，大约阅读时间需要 55 分钟。

<?php

class PHPZip

{

private $ctrl_dir = array();

private $datasec = array();

/**********************************************************

* 压缩部分

**********************************************************/

// ------------------------------------------------------ //

// #遍历指定文件夹

// $archive = new PHPZip();

// $filelist = $archive->visitFile(文件夹路径);

// print "当前文件夹的文件:<p>\r\n";

// foreach($filelist as $file)

// printf("%s<br>\r\n", $file);

// ------------------------------------------------------ //

var $fileList = array();

public function visitFile($path)

{

global $fileList;

$path = str_replace("\\", "/", $path);

$fdir = dir($path);

while(($file = $fdir->read()) !== false)

{

if($file == '.' || $file == '..'){ continue; }

$pathSub = preg_replace("*/{2,}*", "/", $path."/".$file); // 替换多个反斜杠

$fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;

if(is_dir($pathSub)){ $this->visitFile($pathSub); }

}

$fdir->close();

return $fileList;

}

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;

}

return ( ($timearray['year'] - 1980) << 25)

| ($timearray['mon'] << 21)

| ($timearray['mday'] << 16)

| ($timearray['hours'] << 11)

| ($timearray['minutes'] << 5)

| ($timearray['seconds'] >> 1);

}

var $old_offset = 0;

private function addFile($data, $filename, $time = 0)

{

$filename = str_replace('\\', '/', $filename);

$dtime = dechex($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";

$fr .= "\x00\x00";

$fr .= "\x08\x00";

$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);

$fr .= pack('v', strlen($filename));

$fr .= pack('v', 0);

$fr .= $filename;

$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 = "\x50\x4b\x01\x02";

$cdrec .= "\x00\x00";

$cdrec .= "\x14\x00";

$cdrec .= "\x00\x00";

$cdrec .= "\x08\x00";

$cdrec .= $hexdtime;

$cdrec .= pack('V', $crc);

$cdrec .= pack('V', $c_len);

$cdrec .= pack('V', $unc_len);

$cdrec .= pack('v', strlen($filename) );

$cdrec .= pack('v', 0 );

$cdrec .= pack('V', 32 );

$cdrec .= pack('V', $this->old_offset );

$this->old_offset = $new_offset;

$cdrec .= $filename;

$this->ctrl_dir[] = $cdrec;

}

var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";

private function file()

{

$data = implode('', $this->datasec);

$ctrldir = implode('', $this->ctrl_dir);

return $data

. $ctrldir

. $this->eof_ctrl_dir

. pack('v', sizeof($this->ctrl_dir))

. pack('V', strlen($ctrldir))

. pack('V', strlen($data))

. "\x00\x00";

}

// ------------------------------------------------------ //

// #压缩到服务器

// $archive = new PHPZip();

// $archive->Zip("需压缩的文件所在目录", "ZIP压缩文件名");

// ------------------------------------------------------ //

public function Zip($dir, $saveName)

{

if(@!function_exists('gzcompress')){ return; }

@ob_end_clean(); //这个地方报错

$filelist = $this->visitFile($dir);

if(count($filelist) == 0){ return; }

foreach($filelist as $file)

{

if(!file_exists($file) || !is_file($file)){ continue; }

$fd = fopen($file, "rb");

$content = @fread($fd, filesize($file));

fclose($fd);

// 1.删除$dir的字符(./folder/file.txt删除./folder/)

// 2.如果存在/就删除(/file.txt删除/)

$file = substr($file, strlen($dir));

if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }

$this->addFile($content, $file);

}

$out = $this->file();

$fp = fopen($saveName, "wb");

fwrite($fp, $out, strlen($out));

fclose($fp);

return $out;

}

// ------------------------------------------------------ //

// #压缩并直接下载

// $archive = new PHPZip();

// $archive->ZipAndDownload("需压缩的文件所在目录");

// ------------------------------------------------------ //

public function ZipAndDownload($dir)

{

if(@!function_exists('gzcompress')){ return; }

ob_end_clean();

$filelist = $this->visitFile($dir);

if(count($filelist) == 0){ return; }

foreach($filelist as $file)

{

if(!file_exists($file) || !is_file($file)){ continue; }

$fd = fopen($file, "rb");

$content = @fread($fd, filesize($file));

fclose($fd);

// 1.删除$dir的字符(./folder/file.txt删除./folder/)

// 2.如果存在/就删除(/file.txt删除/)

$file = substr($file, strlen($dir));

if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }

$this->addFile($content, $file);

}

$out = $this->file();

@header('Content-Encoding: none');

@header('Content-Type: application/zip');

@header('Content-Disposition: attachment ; filename=Farticle'.date("YmdHis", time()).'.zip');

@header('Pragma: no-cache');

@header('Expires: 0');

print($out);

}

/**********************************************************

* 解压部分

**********************************************************/

// ------------------------------------------------------ //

// ReadCentralDir($zip, $zipfile)

// $zip是经过@fopen($zipfile, 'rb')打开的

// $zipfile是zip文件的路径

// ------------------------------------------------------ //

private function ReadCentralDir($zip, $zipfile)

{

$size = filesize($zipfile);

$max_size = ($size < 277) ? $size : 277;

@fseek($zip, $size - $max_size);

$pos = ftell($zip);

$bytes = 0x00000000;

while($pos < $size)

{

$byte = @fread($zip, 1);

$bytes = ($bytes << 8) | Ord($byte);

$pos++;

if($bytes == 0x504b0506){ break; }

}

$data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));

$centd['comment'] = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : ''; // 注释

$centd['entries'] = $data['entries'];

$centd['disk_entries'] = $data['disk_entries'];

$centd['offset'] = $data['offset'];

$centd['disk_start'] = $data['disk_start'];

$centd['size'] = $data['size'];

$centd['disk'] = $data['disk'];

return $centd;

}

private function ReadCentralFileHeaders($zip)

{

$binary_data = fread($zip, 46);

$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);

$header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';

$header['extra'] = ($header['extra_len'] != 0) ? fread($zip, $header['extra_len']) : '';

$header['comment'] = ($header['comment_len'] != 0) ? fread($zip, $header['comment_len']) : '';

if($header['mdate'] && $header['mtime'])

{

$hour = ($header['mtime'] & 0xF800) >> 11;

$minute = ($header['mtime'] & 0x07E0) >> 5;

$seconde = ($header['mtime'] & 0x001F) * 2;

$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;

$month = ($header['mdate'] & 0x01E0) >> 5;

$day = $header['mdate'] & 0x001F;

$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);

} else {

$header['mtime'] = time();

}

$header['stored_filename'] = $header['filename'];

$header['status'] = 'ok';

if(substr($header['filename'], -1) == '/'){ $header['external'] = 0x41FF0010; } // 判断是否文件夹

return $header;

}

private function ReadFileHeader($zip)

{

$binary_data = fread($zip, 30);

$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);

$header['filename'] = fread($zip, $data['filename_len']);

$header['extra'] = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';

$header['compression'] = $data['compression'];

$header['size'] = $data['size'];

$header['compressed_size'] = $data['compressed_size'];

$header['crc'] = $data['crc'];

$header['flag'] = $data['flag'];

$header['mdate'] = $data['mdate'];

$header['mtime'] = $data['mtime'];

if($header['mdate'] && $header['mtime']){

$hour = ($header['mtime'] & 0xF800) >> 11;

$minute = ($header['mtime'] & 0x07E0) >> 5;

$seconde = ($header['mtime'] & 0x001F) * 2;

$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;

$month = ($header['mdate'] & 0x01E0) >> 5;

$day = $header['mdate'] & 0x001F;

$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);

}else{

$header['mtime'] = time();

}

$header['stored_filename'] = $header['filename'];

$header['status'] = "ok";

return $header;

}

private function ExtractFile($header, $to, $zip)

{

$header = $this->readfileheader($zip);

if(substr($to, -1) != "/"){ $to .= "/"; }

if(!@is_dir($to)){ @mkdir($to, 0777); }

$pth = explode("/", dirname($header['filename']));

for($i=0; isset($pth[$i]); $i++){

if(!$pth[$i]){ continue; }

$pthss .= $pth[$i]."/";

if(!is_dir($to.$pthss)){ @mkdir($to.$pthss, 0777); }

}

if(!($header['external'] == 0x41FF0010) && !($header['external'] == 16))

{

if($header['compression'] == 0)

{

$fp = @fopen($to.$header['filename'], 'wb');

if(!$fp){ return(-1); }

$size = $header['compressed_size'];

while($size != 0)

{

$read_size = ($size < 2048 ? $size : 2048);

$buffer = fread($zip, $read_size);

$binary_data = pack('a'.$read_size, $buffer);

@fwrite($fp, $binary_data, $read_size);

$size -= $read_size;

}

fclose($fp);

touch($to.$header['filename'], $header['mtime']);

}else{

$fp = @fopen($to.$header['filename'].'.gz', 'wb');

if(!$fp){ return(-1); }

$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']), Chr(0x00), time(), Chr(0x00), Chr(3));

fwrite($fp, $binary_data, 10);

$size = $header['compressed_size'];

while($size != 0)

{

$read_size = ($size < 1024 ? $size : 1024);

$buffer = fread($zip, $read_size);

$binary_data = pack('a'.$read_size, $buffer);

@fwrite($fp, $binary_data, $read_size);

$size -= $read_size;

}

$binary_data = pack('VV', $header['crc'], $header['size']);

fwrite($fp, $binary_data, 8);

fclose($fp);

$gzp = @gzopen($to.$header['filename'].'.gz', 'rb') or die("Cette archive est compress!");

if(!$gzp){ return(-2); }

$fp = @fopen($to.$header['filename'], 'wb');

if(!$fp){ return(-1); }

$size = $header['size'];

while($size != 0)

{

$read_size = ($size < 2048 ? $size : 2048);

$buffer = gzread($gzp, $read_size);

$binary_data = pack('a'.$read_size, $buffer);

@fwrite($fp, $binary_data, $read_size);

$size -= $read_size;

}

fclose($fp); gzclose($gzp);

touch($to.$header['filename'], $header['mtime']);

@unlink($to.$header['filename'].'.gz');

}

return true;

}

// ------------------------------------------------------ //

// #解压文件

// $archive = new PHPZip();

// $zipfile = "ZIP压缩文件名";

// $savepath = "解压缩目录名";

// $zipfile = $unzipfile;

// $savepath = $unziptarget;

// $array = $archive->GetZipInnerFilesInfo($zipfile);

// $filecount = 0;

// $dircount = 0;

// $failfiles = array();

// set_time_limit(0); // 修改为不限制超时时间(默认为30秒)

// for($i=0; $i<count($array); $i++) {

// if($array[$i][folder] == 0){

// if($archive->unZip($zipfile, $savepath, $i) > 0){

// $filecount++;

// }else{

// $failfiles[] = $array[$i][filename];

// }

// }else{

// $dircount++;

// }

// set_time_limit(30);

//printf("文件夹:%d    解压文件:%d    失败:%d<br>\r\n", $dircount, $filecount, count($failfiles));

//if(count($failfiles) > 0){

// foreach($failfiles as $file){

// printf("·%s<br>\r\n", $file);

// }

//}

// ------------------------------------------------------ //

public function unZip($zipfile, $to, $index = Array(-1))

{

$ok = 0;

$zip = @fopen($zipfile, 'rb');

if(!$zip){ return(-1); }

$cdir = $this->ReadCentralDir($zip, $zipfile);

$pos_entry = $cdir['offset'];

if(!is_array($index)){ $index = array($index); }

for($i=0; $index[$i]; $i++)

{

if(intval($index[$i]) != $index[$i] || $index[$i] > $cdir['entries'])

{

return(-1);

}

for($i=0; $i<$cdir['entries']; $i++)

{

@fseek($zip, $pos_entry);

$header = $this->ReadCentralFileHeaders($zip);

$header['index'] = $i;

$pos_entry = ftell($zip);

@rewind($zip);

fseek($zip, $header['offset']);

if(in_array("-1", $index) || in_array($i, $index))

{

$stat[$header['filename']] = $this->ExtractFile($header, $to, $zip);

}

fclose($zip);

return $stat;

}

/**********************************************************

* 其它部分

**********************************************************/

// ------------------------------------------------------ //

// #获取被压缩文件的信息

// $archive = new PHPZip();

// $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);

// for($i=0; $i<count($array); $i++) {

// printf("<b>·%s</b><br>\r\n", $array[$i][filename]);

// foreach($array[$i] as $key => $value)

// printf("%s => %s<br>\r\n", $key, $value);

// print "\r\n<p>------------------------------------<p>\r\n\r\n";

// }

// ------------------------------------------------------ //

public function GetZipInnerFilesInfo($zipfile)

{

$zip = @fopen($zipfile, 'rb');

if(!$zip){ return(0); }

$centd = $this->ReadCentralDir($zip, $zipfile);

@rewind($zip);

@fseek($zip, $centd['offset']);

$ret = array();

for($i=0; $i<$centd['entries']; $i++)

{

$header = $this->ReadCentralFileHeaders($zip);

$header['index'] = $i;

$info = array(

'filename' => $header['filename'], // 文件名

'stored_filename' => $header['stored_filename'], // 压缩后文件名

'size' => $header['size'], // 大小

'compressed_size' => $header['compressed_size'], // 压缩后大小

'crc' => strtoupper(dechex($header['crc'])), // CRC32

'mtime' => date("Y-m-d H:i:s",$header['mtime']), // 文件修改时间

'comment' => $header['comment'], // 注释

'folder' => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0, // 是否为文件夹

'index' => $header['index'], // 文件索引

'status' => $header['status'] // 状态

);

$ret[] = $info;

unset($header);

}

fclose($zip);

return $ret;

}

// ------------------------------------------------------ //

// #获取压缩文件的注释

// $archive = new PHPZip();

// echo $archive->GetZipComment(ZIP压缩文件名);

// ------------------------------------------------------ //

public function GetZipComment($zipfile)

{

$zip = @fopen($zipfile, 'rb');

if(!$zip){ return(0); }

$centd = $this->ReadCentralDir($zip, $zipfile);

fclose($zip);

return $centd[comment];

}

//引用 http://www.cnblogs.com/hcbin/archive/2010/08/11/1797488.html

压缩到服务器:

压缩目录:　　　　　<input name="zipdir" type="text" id="zipdir" />(例如./folder)<br>

另存为路径和文件名:<input name="savename" type="text" id="savename" />(例如./folder/file.zip)(需要填写扩展名)<br>

压缩并下载

文件所在目录:<input name="zipdowndir" type="text" id="zipdowndir" />(例如./folder)<br>

在线解压zip

文件:　<input name="unzipfile" type="text" id="unzipfile" />(例如./folder/file.zip)<br>

解压到:<input name="unziptarget" type="text" id="unziptarget" />(例如./folder)<br>

读取压缩文件内部文件信息和注释

文件:<input name="readfile" type="text" id="readfile" />(例如./folder/file.zip)<br>

</form>

echo "<p><p>\r\n";

echo "<br>--------------------------<br>\r\n";

echo "显示信息:\r\n";

echo "<br>--------------------------<br>\r\n";

$archive = new PHPZip();

if(!empty($zip))

{

$archive->Zip($zipdir, $savename);

}

elseif(!empty($zipdown))

{

$archive->ZipAndDownload($zipdowndir);

}

elseif(!empty($unzip))

{

$zipfile = $unzipfile;

$savepath = $unziptarget;

$array = $archive->GetZipInnerFilesInfo($zipfile);

$filecount = 0;

$dircount = 0;

$failfiles = array();

set_time_limit(0); // 修改为不限制超时时间(默认为30秒)

for($i=0; $i<count($array); $i++) {

if($array[$i][folder] == 0){

if($archive->unZip($zipfile, $savepath, $i) > 0){

$filecount++;

}else{

$failfiles[] = $array[$i][filename];

}

}else{

$dircount++;

}

set_time_limit(30);

printf("文件夹:%d    解压文件:%d    失败:%d<br>\r\n", $dircount, $filecount, count($failfiles));

if(count($failfiles) > 0){

foreach($failfiles as $file){

printf("·%s<br>\r\n", $file);

}

elseif(!empty($readfileinfo))

{

$array = $archive->GetZipInnerFilesInfo($readfile);

for($i=0; $i<count($array); $i++) {

printf("<b>·%s</b><br>\r\n", $array[$i][filename]);

foreach($array[$i] as $key => $value)

printf("%s => %s<br>\r\n", $key, $value);

print "\r\n<p>------------------------------------<p>\r\n\r\n";

}

elseif(!empty($readcomment))

{

$comment = $archive->GetZipComment($readfile);

printf("%s<br>\r\n", $comment);

}

转载于:https://www.cnblogs.com/gaogaoxingxing/p/7691747.html

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