php-下载功能

Jun 23, 2016 pm 01:58 PM
download Function

<?php $filename="胡主席好.pdf";      if(!file_exists($filename))   {     echo "不存在此文件";     return;   }      $fp=fopen($filename,"r");   $file_size=filesize($filename);      //配置头文件      //返回文件类型   header("content-type:application/octet-stream");   //按照字节大小返回   header("Accept-Ranges:bytes");   //返回文件的大小   header("Accept-Length:$file_size");   //客户端弹出一个对话框   header("Content-Disposition:attachment;filename=".$filename);      //向客户端回送数据   $buffer=2048*5;      while(!feof($fp))   {     $file_data = fread($fp,$buffer);          //会送到浏览器     echo $file_data;   }   fclose($fp);   ?>
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