php文件下载

<a href='要下载的文件'>点击下载</a>

$file_name='文件名'; header ( 'Content-Disposition: attachment; filename=' . basename ( $file_name )); header ( 'Content-Length: '.filesize ( $file_name )); readfile ( $file_name );

$file_name='要下载的文件名';$fp=fopen($file_name,"r+");$file_size=filesize($file_name);//header("Content-type: application/octet-stream"); //返回的文件类型//header("Accept-Ranges: bytes");//按照字节格式返回header("Accept-Length: ".$file_size);header("Content-Disposition: attachment; filename=".$file_name);$buffer=1024;while(!feof($fp)){    $file_data=fread($fp,$buffer);    echo $file_data;}fclose($fp);