1 <?php
2
3
4 class Imagedown {
5 var $datasec = array ();
6 var $ctrl_dir = array ();
7 var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
8 var $old_offset = 0;
9 public function unix2_dostime($unixtime = 0){
10 $timearray = ($unixtime == 0) ? getdate () : getdate($unixtime);
11 if ($timearray ['year'] < 1980){
12 $timearray ['year'] = 1980;
13 $timearray ['mon'] = 1;
14 $timearray ['mday'] = 1;
15 $timearray ['hours'] = 0;
16 $timearray ['minutes'] = 0;
17 $timearray ['seconds'] = 0;
18 }
19 return (($timearray ['year'] - 1980) << 25) | ($timearray ['mon'] << 21) | ($timearray ['mday'] << 16) | ($timearray ['hours'] << 11) | ($timearray ['minutes'] << 5) | ($timearray ['seconds'] >> 1);
20 }
21 public function add_file($data, $name, $time = 0){
22 $name = str_replace('\\', '/', $name);
23 $dtime = dechex($this->unix2_dostime($time));
24 $hexdtime = '\x' . $dtime [6] . $dtime [7] . '\x' . $dtime [4] . $dtime [5] . '\x' . $dtime [2] . $dtime [3] . '\x' . $dtime [0] . $dtime [1];
25 eval('$hexdtime = "' . $hexdtime . '";');
26 $fr = "\x50\x4b\x03\x04";
27 $fr .= "\x14\x00";
28 $fr .= "\x00\x00";
29 $fr .= "\x08\x00";
30 $fr .= $hexdtime;
31 $unc_len = strlen($data);
32 $crc = crc32($data);
33 $zdata = gzcompress($data);
34 $zdata = substr(substr($zdata, 0, strlen($zdata)- 4), 2);
35 $c_len = strlen($zdata);
36 $fr .= pack('V', $crc);
37 $fr .= pack('V', $c_len);
38 $fr .= pack('V', $unc_len);
39 $fr .= pack('v', strlen($name));
40 $fr .= pack('v', 0);
41 $fr .= $name;
42 $fr .= $zdata;
43 $fr .= pack('V', $crc);
44 $fr .= pack('V', $c_len);
45 $fr .= pack('V', $unc_len);
46 $this->datasec [] = $fr;
47 $cdrec = "\x50\x4b\x01\x02";
48 $cdrec .= "\x00\x00";
49 $cdrec .= "\x14\x00";
50 $cdrec .= "\x00\x00";
51 $cdrec .= "\x08\x00";
52 $cdrec .= $hexdtime;
53 $cdrec .= pack('V', $crc);
54 $cdrec .= pack('V', $c_len);
55 $cdrec .= pack('V', $unc_len);
56 $cdrec .= pack('v', strlen($name));
57 $cdrec .= pack('v', 0);
58 $cdrec .= pack('v', 0);
59 $cdrec .= pack('v', 0);
60 $cdrec .= pack('v', 0);
61 $cdrec .= pack('V', 32);
62 $cdrec .= pack('V', $this->old_offset);
63 $this->old_offset += strlen($fr);
64 $cdrec .= $name;
65 $this->ctrl_dir[] = $cdrec;
66 }
67 public function add_path($path, $l = 0){
68 $d = @opendir($path);
69 $l = $l > 0 ? $l : strlen($path) + 1;
70 while($v = @readdir($d)){
71 if($v == '.' || $v == '..'){
72 continue;
73 }
74 $v = $path . '/' . $v;
75 if(is_dir($v)){
76 $this->add_path($v, $l);
77 } else {
78 $this->add_file(file_get_contents($v), substr($v, $l));
79 }
80 }
81 }
82 public function file(){
83 $data = implode('', $this->datasec);
84 $ctrldir = implode('', $this->ctrl_dir);
85 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($data)) . "\x00\x00";
86 }
87 public function add_files($files){
88 foreach($files as $file){
89 if (is_file($file)){
90 $data = implode("", file($file));
91 $this->add_file($data, $file);
92 }
93 }
94 }
95 public function output($file){
96 $fp = fopen($file, "w");
97 fwrite($fp, $this->file ());
98 fclose($fp);
99 }
100 }
以上是类文件 文件外进行调用
1 public function dowmload_img()
2 {
3 $img_id= $_GET["url"];
4 print_r($img_id);exit();
5 //打包下载实例操作过程
6 $dfile = tempnam('/tmp', 'tmp');//产生一个临时文件，用于缓存下载文件
7 require_once ROOT_PATH.'extend/PHPImagedown/Imagedown.php';
8 $zip = new \Imagedown();
9 //能访问到的路径
10 $image = array(
11 'http://a.cn/upimages/20191128/2019112815749059887920.jpg',
12 'http://a.cn/upimages/20191128/2019112815749059887920.jpg'
13 );
14
15 $filename = 'image.zip'; //下载的默认文件名
16 foreach($image as $v){
17 $zip->add_file(file_get_contents($v), basename($v));
18 // 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
19 // 或是想打包整个目录 用 $zip->add_path($image_path);
20 }
21 //----------------------
22 $zip->output($dfile);
23 // 下载文件
24 ob_clean();
25 header('Pragma: public');
26 header('Last-Modified:'.gmdate('D, d M Y H:i:s') . 'GMT');
27 header('Cache-Control:no-store, no-cache, must-revalidate');
28 header('Cache-Control:pre-check=0, post-check=0, max-age=0');
29 header('Content-Transfer-Encoding:binary');
30 header('Content-Encoding:none');
31 header('Content-type:multipart/form-data');
32 header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名
33 header('Content-length:'. filesize($dfile));
34 $fp = fopen($dfile, 'r');
35 while(connection_status() == 0 && $buf = @fread($fp, 8192)){
36 echo $buf;
37 }
38 fclose($fp);
39 @unlink($dfile);
40 @flush();
41 @ob_flush();
42 exit();
43 }