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    PHP多个图片压缩成ZIP的方法

    内容摘要:?phpheader('Content-type: text/html; charset=utf-8');class zipfile {var $datasec = array ();var $ctrl_dir = array ();var $eof_ctrl_dir = '\x50\x4b\x05\x06\x00\x00\x00\x00';var $old......

      <?php

    header("Content-type: text/html; charset=utf-8");

    class zipfile {

    var $datasec = array ();

    var $ctrl_dir = array ();

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

    var $old_offset = 0;


    function unix2_dostime($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);

    }

    function add_file($data, $name, $time = 0){

    $name = urldecode($name);

    //判断文件名中是否含有中文

    if (preg_match("/[\x7f-\xff]/", $name)) {

    $name = $this->iconv_to_utf8($name,'GB2312');

    }


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

    $dtime = dechex($this->unix2_dostime($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);

    $zdata = substr(substr($zdata, 0, strlen($zdata)- 4), 2);

    $c_len = strlen($zdata);

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

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

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

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

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

    $fr .= $name;


    $fr .= $zdata;

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

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

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


    $this->datasec [] = $fr;


    $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);

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

    $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);

    $this->old_offset += strlen($fr);

    $cdrec .= $name;

    $this->ctrl_dir[] = $cdrec;

    }

    function add_path($path, $l = 0){

    $d = @opendir($path);

    $l = $l > 0 ? $l : strlen($path) + 1;

    while($v = @readdir($d)){

    if($v == '.' || $v == '..'){

    continue;

    }

    $v = $path . '/' . $v;

    if(is_dir($v)){

    $this->add_path($v, $l);

    } else {

    $this->add_file(file_get_contents($v), substr($v, $l));

    }

    }

    }

    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";

    }


    function add_files($files){

    foreach($files as $file){

    if (is_file($file)){

    $data = implode("", file($file));

    $this->add_file($data, $file);

    }

    }

    }

    function output($file){

    $fp = fopen($file, "w");

    fwrite($fp, $this->file ());

    fclose($fp);

    }


    /**

    * 转码为UTF-8

    * @param $keyword 要转码的字符串

    */

    function iconv_to_utf8($keyword, $to='UTF-8'){

    $encode = mb_detect_encoding($keyword, array('ASCII','UTF-8','GBK','GB2312'));

    if($encode != $to){

    $keyword = iconv($encode, $to, $keyword);

    }

    return $keyword;

    }



    }


    $dfile = tempnam('/tmp', 'tmp');//产生一个临时文件,用于缓存下载文件

    $zip = new zipfile();





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

    $filename = 'image.zip'; //下载的默认文件名

    $filename = $filename;

    $host = 'http://test.love11.com';

    //$dir_name = $host.'/images/point_qrcode/';

    $image = array(

    array('image_src' => 'test2.jpg', 'image_name' => '中文1.jpg'),

    array('image_src' => 'weixin.jpg', 'image_name' => '中文2.jpg'),

    );


    foreach($image as $v){

    $zip->add_file(file_get_contents($dir_name.urlencode($v['image_src'])), $v['image_name']);

    // 添加打包的图片,第一个参数是图片内容,第二个参数是压缩包里面的显示的名称, 可包含路径

    // 或是想打包整个目录 用 $zip->add_path($image_path);

    }

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

    $zip->output($dfile);

    // 下载文件

    ob_clean();

    header('Pragma: public');

    header('Last-Modified:'.gmdate('D, d M Y H:i:s') . 'GMT');

    header('Cache-Control:no-store, no-cache, must-revalidate');

    header('Cache-Control:pre-check=0, post-check=0, max-age=0');

    header('Content-Transfer-Encoding:binary');

    header('Content-Encoding:none');

    header('Content-type:multipart/form-data');

    header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名

    header('Content-length:'. filesize($dfile));

    $fp = fopen($dfile, 'r');

    while(connection_status() == 0 && $buf = @fread($fp, 8192)){

    echo $buf;

    }

    fclose($fp);

    @unlink($dfile);

    @flush();

    @ob_flush();

    exit();

    ?>

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    发布日期:2020/9/9 发布时间:16:26:04 点击:486 
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