PHP多个图片压缩成ZIP的方法
发布:smiling 来源: PHP粉丝网 添加日期:2021-10-19 19:36:02 浏览: 评论:0
这篇文章主要为大家详细介绍了PHP多个图片压缩成ZIP的方法,可将多个文件压缩成一个zip压缩包,具有一定的参考价值,感兴趣的小伙伴们可以参考一下。
本文实例为大家分享了PHP多个图片压缩成ZIP的具体代码,供大家参考,具体内容如下。
可将多个文件压缩成一个zip压缩包,文件名可自定义(兼容中文文件名)
- <?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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