利用PHP怎么對(duì)圖片進(jìn)行批量打包下載-創(chuàng)新互聯(lián)
今天就跟大家聊聊有關(guān)利用PHP怎么對(duì)圖片進(jìn)行批量打包下載，可能很多人都不太了解，為了讓大家更加了解，小編給大家總結(jié)了以下內(nèi)容，希望大家根據(jù)這篇文章可以有所收獲。
新建一個(gè)zipfile打包類：
> 1);
}
function add_file($data, $name, $time = 0){
$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);
}
}
//下面是實(shí)例操作過(guò)程：
$dfile = tempnam('/tmp', 'tmp');//產(chǎn)生一個(gè)臨時(shí)文件，用于緩存下載文件
$zip = new zipfile();
//----------------------
$filename = 'image.zip'; //下載的默認(rèn)文件名
//以下是需要下載的圖片數(shù)組信息，將需要下載的圖片信息轉(zhuǎn)化為類似即可
$image = array(
array('image_src' => 'pic1.jpg', 'image_name' => '圖片1.jpg'),
array('image_src' => 'pic2.jpg', 'image_name' => 'pic/圖片2.jpg'),
);
foreach($image as $v){
$zip->add_file(file_get_contents($v['image_src']), $v['image_name']);
// 添加打包的圖片，第一個(gè)參數(shù)是圖片內(nèi)容，第二個(gè)參數(shù)是壓縮包里面的顯示的名稱, 可包含路徑
// 或是想打包整個(gè)目錄 用 $zip->add_path($image_path);
}
//----------------------
$zip->output($dfile);
// 下載文件
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="'.$filename.'"'); //設(shè)置下載的默認(rèn)文件名
header('Content-length:'. filesize($dfile));
$fp = fopen($dfile, 'r');
while(connection_status() == 0 && $buf = @fread($fp, 8192)){
echo $buf;
}
fclose($fp);
@unlink($dfile);
@flush();
@ob_flush();
exit();
?>看完上述內(nèi)容，你們對(duì)利用PHP怎么對(duì)圖片進(jìn)行批量打包下載有進(jìn)一步的了解嗎？如果還想了解更多知識(shí)或者相關(guān)內(nèi)容，請(qǐng)關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道，感謝大家的支持。
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