返回顶部

收藏

PHP断点续传-HTTP

更多

PHP断点续传-HTTP

[PHP]代码

<?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);

}

/*End of PHP*/

标签:HTTP

收藏

0人收藏

支持

0

反对

0

发表评论