php 下载保存文件保存到本地的两种实现方法

前端技术 2023/09/06 PHP

第一种:

<?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 
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);
?> 

第二种:

<?php 
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);
?>

PHP实现下载文件的两种方法。分享下,有用到的朋友看看哦。

方法一:

<?php
/**
* 下载文件
* header函数
*
*/
header(\'Content-Description: File Transfer\');

header(\'Content-Type: application/octet-stream\');
header(\'Content-Disposition: attachment; filename=\'.basename($filepath));
header(\'Content-Transfer-Encoding: binary\');
header(\'Expires: 0′);
header(\'Cache-Control: must-revalidate, post-check=0, pre-check=0′);
header(\'Pragma: public\');
header(\'Content-Length: \' . filesize($filepath));
readfile($file_path);
?>

了解php中header函数的用法。

方法二:

<?php
//文件下载
//readfile
$fileinfo = pathinfo($filename);
header(\'Content-type: application/x-\'.$fileinfo[\'extension\']);
header(\'Content-Disposition: attachment; filename=\'.$fileinfo[\'basename\']);
header(\'Content-Length: \'.filesize($filename));
readfile($thefile);
exit();
?>

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