PHP实现HTTP断点续传的方法

本文实例讲述了PHP实现HTTP断点续传的方法。分享给大家供大家参考。具体实现方法如下：

<?php/** * PHP-HTTP断点续传实现 * @param string $path: 文件所在路径 * @param string $file: 文件名 * @return void */function download($path,$file) {  $real = $path.'/'.$file;  if(!file_exists($real)) {    return false;  }  $size = filesize($real);  $size2 = $size-1;  $range = 0;  if(isset($_SERVER['HTTP_RANGE'])) {    header('HTTP /1.1 206 Partial Content');    $range = str_replace('=','-',$_SERVER['HTTP_RANGE']);    $range = explode('-',$range);    $range = trim($range[1]);    header('Content-Length:'.$size);    header('Content-Range: bytes '.$range.'-'.$size2.'/'.$size);  } else {    header('Content-Length:'.$size);    header('Content-Range: bytes 0-'.$size2.'/'.$size);  }  header('Accenpt-Ranges: bytes');  header('application/octet-stream');  header("Cache-control: public");  header("Pragma: public");  //解决在IE中下载时中文乱码问题  $ua = $_SERVER['HTTP_USER_AGENT'];  if(preg_match('/MSIE/',$ua)) {    $ie_filename = str_replace('+','%20',urlencode($file));    header('Content-Dispositon:attachment; filename='.$ie_filename);  } else {    header('Content-Dispositon:attachment; filename='.$file);  }  $fp = fopen($real,'rb+');  fseek($fp,$range);  while(!feof($fp)) {    set_time_limit(0);    print(fread($fp,1024));    flush();    ob_flush();  }  fclose($fp);}

希望本文所述对大家的php程序设计有所帮助。