サマリー：<!doctype html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" &nb
<!doctype html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>文件上傳/下載頁面</title> </head> <body> <form action="upFile.php" method="post" enctype="multipart/form-data" > <label>請選擇需要上傳的文件：</label> <input type="file" name = "upFile"> <br><br> <label> 請確定開始上傳此文件：</label> <input type="submit" value="上傳"> </form> <br><br> <form action="down.php" method="get"> <input type="text" name="downFileName" value="demo.rar"> <input type="submit" value="下載"> </form> </body> </html>
//upFile.php <?php require 'upFun.php'; print_r(upFile($_FILES['upFile'])); ?>
//down.php <?php require 'upFun.php'; $downFile=$_GET['downFileName']; dowFile($downFile); ?>
//upFun.php
<?php
function dowFile($fileName)
{
header('Accept-Length:'.filesize($fileName));
// 主要是這一行
header('Content-Disposition:attachment;filename='.basename($fileName));
readfile($fileName);
}
function upFile($fileInfo,$uploadPath='./upload',$allowExt = ['png','jpg','jpeg','gif'
,'txt','html'],$maxSize = 2000000){
if($fileInfo['error'] ===0){
//返回文件后綴名
$ext = strtolower(pathinfo($fileInfo['name'],PATHINFO_EXTENSION));
if(!in_array($ext,$allowExt)){
return '非法文件類型';
}
if(!is_uploaded_file($fileInfo['tmp_name'])){
return '非法上傳！';
}
if(!is_dir($uploadPath)){
mkdir($uploadPath,0777,true);
}
//文件名，用md生成的
$uniName = md5(uniqid(microtime(true),true)).".".$ext;
//新文件名
$dest = $uploadPath."/".$uniName;
if(!move_uploaded_file($fileInfo['tmp_name'],$dest))
{
return '文件上傳失敗';
}
return '文件上傳成功';
}else{
switch ($fileInfo['error']){
case 1:
$res = '上傳的文件超過了php.ini 中
upload_max_filesize 選項限制的值';
break;
case 2:
$res = '上傳文件的大小超過了HTML表單中MAX_FILE_SIZE 選項指定的值';
break;
case 3:
$res = '文件只有部分被上傳';
break;
case 4:
$res ='沒有文件被上傳';
break;
case 6:
case 7:
$res = '系統(tǒng)錯誤';
break;
}
return $res;
}
}
添削の先生：查無此人添削時間：2019-04-18 09:53:49
先生のまとめ：完成的不錯，上傳文件格式記得要限制一下。不然會有病毒上傳。繼續(xù)加油。