upload.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>上传文件</title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="MyFile">
<input type="submit" value="上传文件">
</form>
</body>
</html>
上传操作:
function.php:
<?php
/**
* 单文件上传操作
* @param $fileInfo 上传的文件信息
* @param string $uploadPath 上传的指定目录
* @param array $allowExt 上传的文件类型
* @param int $maxSize 上传的文件最大值
* @return string 提示信息
*/
function upload_file($fileInfo,$uploadPath='./upload',$allowExt=['png','jpg','jpeg','gif','txt','html'],$maxSize=10000000)
{
if ($fileInfo['error'] === 0){
$ext = strtolower(pathinfo($fileInfo['name'],PATHINFO_EXTENSION));
if (!in_array($ext,$allowExt)){
return '非法文件类型!';
}
if ($fileInfo['size']>$maxSize){
return '超出文件上传最大值！';
}
if (!is_uploaded_file($fileInfo['tmp_name'])){
return '非法上传!';
}
if (!is_dir($uploadPath)){
mkdir($uploadPath,0777,true);
}
$uniName = md5(uniqid(microtime(true),true)).".".$ext;
$dest = $uploadPath."/".$uniName;
if (!move_uploaded_file($fileInfo['tmp_name'],$dest)){
return '文件上传失败!';
}
return '文件上传成功!';
}else{
switch ($fileInfo['error']){
case 1:
$res = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值!';
break;
case 2:
$res = '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值!';
break;
case 3:
$res = '文件只有部分被上传!';
break;
case 4:
$res = '没有文件被上传!';
break;
case 6:
$res = '找不到临时文件夹!';
break;
case 7:
$res = '文件写入失败!';
}
return $res;
}
}
upload.php:
<?php
include 'function10.php';
$fileinfo = $_FILES['MyFile'];
var_dump(upload_file($fileinfo));
下载操作:
function.php：
<?php
/*
* 文件的下载
* @param $filename 下载的文件
*/
function dow_file($filename)
{
//告诉浏览器返回文件的大小
header('Accept-Length:'.filesize($filename));
//告诉浏览器文件作为附件处理,并告诉浏览器下载完的文件名
header('Content-Disposition:attachment;filename='.basename($filename));
//输出文件/下载文件
readfile($filename);
}
dow_file('www.zip');
