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PHP package file example

Dec 25, 2017 pm 02:58 PM
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很多时候我们可能需要将很多小文件打包提供给用户下载,那具体如何实现呢?本文主要介绍了PHP打包文件实例,直接给出PHP打包文件的示例代码,希望对大家有所帮助。

大概需求:

每一个订单都有多个文件附件,在下载的时候希望对当前订单的文件自动打包成一个压缩包下载

细节需求:当前订单号_年月日+时间.zip  例如:

1.生成压缩文件,压缩文件名格式:

2.压缩文件存放在根目录 /upload/zipfile/年月/自定义的压缩文件名.zip

3.点击下载压缩包,系统开始对压缩文件打包,打包完成后自动开始下载

4.为了防止暴露压缩包文件路径,需要对下载的压缩包文件名改名

 

具体操作模式请见下面的代码:

文件路径:

压缩包文件存放路径:/upload/zipfile/

上传的附件存放路径:/upload/file/

1.基本配置文件文件 config.inc.php放在系统根目录

 


define('SYS_ROOT', str_replace("\\", '/', dirname(__FILE__)));
define('SYS_UPLOAD', SYS_ROOT.'/upload/file');
define('SYS_DOWNLOAD', SYS_ROOT.'/upload/zipfile');
define('SYS_WIN', strpos(strtoupper(PHP_OS), 'WIN') !== false ? true: false);
define('SYS_CHMOD', ('0777' && !SYS_WIN) ? '0777' : 0);


 

2.压缩包程序代码文件 getzip.php


header("Content-type: text/html; charset=utf-8");
require_once '../config.inc.php'; //载入配置路径配置文件
$arrfiles = array(SYS_UPLOAD . '/1.jpg',
  SYS_UPLOAD . '/x.jpg',); //这里是附件的文件数组
$orderNum = '888'; //订单号
$downFileName = 'tieniu.zip'; //下载的文件名 如果为空那么就是系统自定义名称 如果指定就显示指定名字
$zipUrl = create_zip($arrfiles, $orderNum); //生成的压缩文件名词
file_down($zipUrl, $downFileName); //提供http下载,并可以进行重命名下载文件,建议重命名,防止路径猜解

/*
 * 生成压缩包文件名
 * @param [String] $orderNum 订单号
 * @return [String] 返回带有绝对路径的订单号的压缩文件名
 */

function get_zipname($orderNum) {
  $zipName = SYS_DOWNLOAD . '/' . date('Ym') . '/' . $orderNum . '_' . date("Ymd_Hi") . '.zip';
  return $zipName;
}

/*
 * 按照特定需求打包压缩包的目录结构设置
 */

function pack_object() {
  
}

/*
 * 生成压缩包
 * @param [Array] $arrfiles 带有绝对路径的文件数组
 * @param [String] $orderNum 订单号
 * @return [String] 返回带有绝对路径的订单号的压缩文件名 如如果失败返回 FALSE
 */

function create_zip($arrfiles, $orderNum) {
  $zipName = get_zipname($orderNum); //获得文件名
  dir_create(dirname($zipName)); //建立生成压缩文件的目录
  $zip = new ZipArchive();
  if ($zip->open($zipName, ZIPARCHIVE::CREATE) !== TRUE) {
    return FALSE;
  }
  foreach ($arrfiles as $path) {
    if (is_file($path)) {//判断文件是否存在
      $zip->addFile($path, basename($path)); //把文件加入到压缩包中
    }
  }
  $zip->close();
  return $zipName;
}

/*
 * 处理文件目录
 * @param [Array] $arrfiles 带有绝对路径的文件数组
 * @param [String] $dirpath 文件路径
 * @return [String] 返回处理的文件路径,方便生成文件目录
 */

function dir_path($dirpath) {
  $dirpath = str_replace('\\', '/', $dirpath);
  if (substr($dirpath, -1) != '/')
    $dirpath = $dirpath . '/';
  return $dirpath;
}

/*
 * 生成文件目录
 * @param [String] $path 文件路径
 * @return [String] 返回生成的文件目录结构
 */

function dir_create($path) {
  if (is_dir($path))
    return true;
  $dir = str_replace(SYS_DOWNLOAD . '/', '', $path);
  $dir = dir_path($dir);
  $temp = explode('/', $dir);
  $cur_dir = SYS_DOWNLOAD . '/';
  $max = count($temp) - 1;
  for ($i = 0; $i < $max; $i++) {
    $cur_dir .= $temp[$i] . &#39;/&#39;;
    if (is_dir($cur_dir))
      continue;
    @mkdir($cur_dir);
    if (SYS_CHMOD)
      @chmod($cur_dir, SYS_CHMOD);
    if (!is_file($cur_dir . &#39;/index.html&#39;) && !is_file($cur_dir . &#39;/index.php&#39;))
      file_copy(SYS_ROOT . &#39;/upload/index.html&#39;, $cur_dir . &#39;/index.html&#39;);
  }

  return is_dir($path);
}

/*
 * 文件COPY
 * @param [String] $from copy源文件
 * @param [String] $to copy文件目的地
 * @return [Bool] 成功 ture 失败 false
 */

function file_copy($from, $to) {
  dir_create(dirname($to));
  if (is_file($to) && SYS_CHMOD)
    @chmod($to, SYS_CHMOD);
  if (@copy($from, $to)) {
    if (SYS_CHMOD)
      @chmod($to, SYS_CHMOD);
    return true;
  } else {
    return false;
  }
}

/*
 * 文件下载处理函数
 * @param [String] $file 文件路径
 * @param [String] $filename 下载时间重新命名的文件名
 * @param [String] $data 下载文件填装的数据内容
 */

function file_down($file, $filename = &#39;&#39;, $data = &#39;&#39;) {
  if (!$data && !is_file($file))
    exit;
  $filename = $filename ? $filename : basename($file);
  $filetype = file_ext($filename);
  $filesize = $data ? strlen($data) : filesize($file);
  ob_end_clean();
  @set_time_limit(0);
  if (strpos($_SERVER[&#39;HTTP_USER_AGENT&#39;], &#39;MSIE&#39;) !== false) {
    header(&#39;Cache-Control: must-revalidate, post-check=0, pre-check=0&#39;);
    header(&#39;Pragma: public&#39;);
  } else {
    header(&#39;Pragma: no-cache&#39;);
  }
  header(&#39;Expires: &#39; . gmdate(&#39;D, d M Y H:i:s&#39;) . &#39; GMT&#39;);
  header(&#39;Content-Encoding: none&#39;);
  header(&#39;Content-Length: &#39; . $filesize);
  header(&#39;Content-Disposition: attachment; filename=&#39; . $filename);
  header(&#39;Content-Type: &#39; . $filetype);
  if ($data) {
    echo $data;
  } else {
    readfile($file);
  }
  exit;
}

function file_ext($filename) {
  return strtolower(trim(substr(strrchr($filename, &#39;.&#39;), 1)));
}

//此函数未用到,用来做整个目录的打包下载
function listdir($start_dir = &#39;.&#39;) {
  $files = array();
  if (is_dir($start_dir)) {
    $fh = opendir($start_dir);
    while (($file = readdir($fh)) !== false) {
      if (strcmp($file, &#39;.&#39;) == 0 || strcmp($file, &#39;..&#39;) == 0)
        continue;
      $filepath = $start_dir . &#39;/&#39; . $file;
      if (is_dir($filepath))
        $files = array_merge($files, listdir($filepath));
      else
        array_push($files, $filepath);
    }
    closedir($fh);
  } else {
    $files = false;
  }
  return $files;
}


 

3.PHP程序生成压缩文件需要用到压缩类:ZipArchive

这个是php的扩展类,自php5.2版本以后就已经支持这个扩展,如果你在使用的时候出现错误,查看下php.ini里面的extension=php_zip.dll前面的分号有没有去掉,然后再重启Apache这样才能使用这个类库。


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php 文件分割与合并(断点续传)

php 文件类型的判断示例代码

简单谈谈 php 文件锁

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