新写PHP HTTP断点续传类文件代码
一个支持断点续传的PHP文件下载类文件,调用方法简单,类代码简洁,可记忆上次的下载的节点,实现累积下载,类名称download,类代码如下:
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); } /** * 参数说明: * @param string $path: 文件路径 * @param string $file: 文件名称 * @return void */
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