PHP封裝 檔案上傳

<?php

function check($file, $folder='uploads', $prefix='')"))");
}#上傳檔案重新命名
$newname= uniqid($prefix,true).strrchr($file['name'],'.'); 
$newdir= "/".$newname
; 
#檔案拓展名驗證
$info=finfo_open(fileinfo_mime_type);
$ext= finfo_file($info, $file['tmp_name']);
$allow= array('image/jpeg','image/png','image/gif');
if(!in_array($ext,$allow
)) 
#驗證檔案大小是否越界
$filesize= ini_get('upload_max_filesize');
if(substr($filesize, -1, 1)== 'k')
elseif(substr($filesize, -1, 1)== 'm')
elseif(substr($filesize, -1, 1)== 'g')
elseif(substr($filesize, -1, 1)== 't')
if($file['size']> $filesize
) 
#驗證是否是http上傳
if(!is_uploaded_file($file['tmp_name']))
#上傳錯誤碼
if($file['error']> 0)
}#檔案上傳
if(move_uploaded_file($file['tmp_name'], $newdir
)) }
if(!empty($_post
)) ?>

doctype html
>
<
html 
lang
="en"
>
<
head
>
<
meta 
charset
="utf-8"
>
<
meta 
name
="viewport"
content
="width=device-width, initial-scale=1.0"
>
<
title
>檔案上傳
title
>
head
>
<
body
>
<
form 
action
="upload.php"
enctype
="multipart/form-data"
method
="post"
>
<
input 
type
="hidden"
name
="max_file_size"
value
="30000000"
>
選擇檔案：
<
input 
type
="file"
name
="userfile"
>
<
input 
type
="submit"
value
="上傳檔案"
>
form
>
body
>
html
>

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