<?php

class Download

{

   public static function get($url, $file)

   {

      return file_put_contents($file, file_get_contents($url));

   }

   public static function curlGet($url, $file)

   {

      $ch = curl_init();

      curl_setopt($ch, CURLOPT_POST, 0);

      curl_setopt($ch,CURLOPT_URL,$url);

      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

      $file_content = curl_exec($ch);

      curl_close($ch);

      $downloaded_file = fopen($file, 'w');

      fwrite($downloaded_file, $file_content);

      fclose($downloaded_file);

   }

   public static function openGet($url, $file)

   {

      $in = fopen($url, "rb");

      $out = fopen($file, "wb");

      while ($chunk = fread($in,8192))

      {

         fwrite($out, $chunk, 8192);

      }

      fclose($in);

      fclose($out);

   }

   /**

   *

   * 创建目录，支持递归创建目录

   * @param String $dirName 要创建的目录

   * @param int $mode 目录权限

   */

   public static function smkdir($dirName , $mode = 0777) {

     $dirs = explode('/' , str_replace('\\' , '/' , $dirName));

     $dir = '';

     foreach ($dirs as $part) {

        $dir.=$part . '/';

        if ( ! is_dir($dir) && strlen($dir) > 0) {

           if ( ! mkdir($dir , $mode)) {

              return false;

           }

           if ( ! chmod($dir , $mode)) {

              return false;

           }

        }

     }

     return true;

   }

}