php 下载保存文件保存到本地的两种方法

<?php
function downfile()
{
$filename=realpath("resume.html"); //文件名
$date=date("Ymd-H:i:m");
Header( "Content-type: application/octet-stream ");
Header( "Accept-Ranges: bytes ");
Header( "Accept-Length: " .filesize($filename));
header( "Content-Disposition: attachment; filename= {$date}.doc");
echo file_get_contents($filename);
readfile($filename);
}
downfile();
?>

<?php
//下载文件保存到本地
//www.jbxue.com
function downfile($fileurl)
{
ob_start();
$filename=$fileurl;
$date=date("Ymd-H:i:m");
header( "Content-type: application/octet-stream ");
header( "Accept-Ranges: bytes ");
header( "Content-Disposition: attachment; filename= {$date}.doc");
$size=readfile($filename);
header( "Accept-Length: " .$size);
}
$url="url地址";
downfile($url);
?>

<?php
//下载文件保存至本地
//www.jbxue.com
function downfile($fileurl)
{
$filename=$fileurl;
$file = fopen($filename, "rb");
Header( "Content-type: application/octet-stream ");
Header( "Accept-Ranges: bytes ");
Header( "Content-Disposition: attachment; filename= 4.doc");
$contents = "";
while (!feof($file)) {
$contents .= fread($file, 8192);
}
echo $contents;
fclose($file);
}
$url="url地址";
downfile($url);
?>