dm-v2.com/Application/Common/Util/Zip.class.php

<?php

namespace Util;

/**
 * 文件压缩解压类
 */
class Zip
{
    private $ctrl_dir = array();
    private $datasec = array();

    /**
     * author xtj
     * intro 码包压缩
     * param $zip 压缩包名 $shell_name 压缩的文件名
     * return array obj json bool string  resource
     */

    public function shell_zip($zip_name, $file_name)
    {
        $pattern = '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ';
        $pwd = '';
        for ($i = 0; $i < 4; $i++) {
            $pwd .= $pattern{mt_rand(0, 61)};//利用大括号截取字符串
        }
        $co = "zip -qj -P $pwd  $zip_name  $file_name";
        exec($co, $out);
        if ($out) {
            return $pwd;
        } else {
            return false;
        }

    }

    /**********************************************************
     * 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);
    // ------------------------------------------------------ //
    public $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);
    }

    public $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', 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 .= $filename;
        $this->ctrl_dir[] = $cdrec;
    }

    public $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', 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();
        $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);
    }

    // ------------------------------------------------------ //
    // #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,$filename)
    {
        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 = $this->file();
        @header('Content-Encoding: none');
        @header('Content-Type: application/zip');
        @header('Content-Disposition: attachment ; filename='.$filename. '.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&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d<br>\r\n", $dircount, $filecount, count($failfiles));
    //if(count($failfiles) > 0){
    //    foreach($failfiles as $file){
    //        printf("&middot;%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>&middot;%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];
    }
}