搜尋
首頁php教程php手册PHP多文件上传操作，

PHP多文件上传操作，

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Jun 13, 2016 am 09:27 AM
php上傳關於原理和操作文件文章是簡單

PHP多文件上传操作，

在前一篇文章里讲到了关于PHP文件上传原理和简单操作举例是单文件上传。

http://www.cnblogs.com/lichenwei/p/3879566.html

其实多文件上传和单文件上传大同小异，原理都是一样的，只是在代码上做了点小技巧。

 

首先还是index.html上传表单，只是把之前上传文件表单里的file更改成了file[]

<span><!</span><span>DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</span><span>></span>
<span><</span><span>html </span><span>xmlns</span><span>="http://www.w3.org/1999/xhtml"</span><span> xml:lang</span><span>="en"</span><span>></span>
<span><</span><span>head</span><span>></span>
    <span><</span><span>meta </span><span>http-equiv</span><span>="Content-Type"</span><span> content</span><span>="text/html;charset=UTF-8"</span><span>></span>
    <span><</span><span>title</span><span>></span>upload files<span></</span><span>title</span><span>></span>
<span></</span><span>head</span><span>></span>
<span><</span><span>body</span><span>></span>

    <span><</span><span>form </span><span>action</span><span>="upload.php"</span><span> enctype</span><span>="multipart/form-data"</span><span> method</span><span>="post"</span><span>></span>
        <span><</span><span>input </span><span>type</span><span>="hidden"</span><span> name</span><span>="MAX_FILE_SIZE"</span><span> value</span><span>="100000"</span> <span>/></span><span>
        上传文件：</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="file[]"</span><span>/><</span><span>br</span><span>/></span><span>
        上传文件：</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="file[]"</span><span>/><</span><span>br</span><span>/></span><span>
        上传文件：</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="file[]"</span><span>/><</span><span>br</span><span>/></span>    
        <span><</span><span>input </span><span>type</span><span>="submit"</span><span> value</span><span>="上传"</span> <span>/></span>
    <span></</span><span>form</span><span>></span>
<span></</span><span>body</span><span>></span>
<span></</span><span>html</span><span>></span>

在upload.php用$_FILES打印看看

<?<span>php　　<br /></span><span>　　print_r</span>(<span>$_FILES</span>); <br />?>

得出下面多维数组

<span>Array</span><span>
(
    [</span><span>file</span>] => <span>Array</span><span>
        (
            [name] </span>=> <span>Array</span><span>
                (
                    [</span>0] => 照片1.<span>jpg
                    [</span>1] => 照片2.<span>jpg
                    [</span>2] => 照片3.<span>jpg
                )

            [type] </span>=> <span>Array</span><span>
                (
                    [</span>0] => image/<span>jpeg
                    [</span>1] => image/<span>jpeg
                    [</span>2] => image/<span>jpeg
                )

            [tmp_name] </span>=> <span>Array</span><span>
                (
                    [</span>0] => F:\wamp\tmp\php36C7.<span>tmp
                    [</span>1] => F:\wamp\tmp\php36C8.<span>tmp
                    [</span>2] => F:\wamp\tmp\php36C9.<span>tmp
                )

            [error] </span>=> <span>Array</span><span>
                (
                    [</span>0] => 0<span>
                    [</span>1] => 0<span>
                    [</span>2] => 0<span>
                )

            [size] </span>=> <span>Array</span><span>
                (
                    [</span>0] => 0<span>
                    [</span>1] => 0<span>
                    [</span>2] => 0<span>
                )

        )

)</span>

按照单文件上传的原理，先想想我们需要得到什么？

很明显我们需要得到一个关于文件信息的数组，数组里包含name,type,tmp_name,error,size，而此时我们得到的是个多维数组，虽然对应的键值都存在，但它是多维的，

我们只需要把它拆分，比如上面的3个文件，我们只需要把它拆分成对应的3个文件信息数组就行了。

拆分数组的结构

<span>Array</span><span>
(
    [</span>0] => <span>Array</span><span>
        (
            [name] </span>=> 照片1.<span>jpg
            [type] </span>=> image/<span>jpeg
            [tmp_name] </span>=> F:\wamp\tmp\php13C1.<span>tmp
            [error] </span>=> 0<span>
            [size] </span>=> 385150<span>
        )

    [</span>1] => <span>Array</span><span>
        (
            [name] </span>=> 照片2.<span>jpg
            [type] </span>=> image/<span>jpeg
            [tmp_name] </span>=> F:\wamp\tmp\php13D2.<span>tmp
            [error] </span>=> 0<span>
            [size] </span>=> 242043<span>
        )

    [</span>2] => <span>Array</span><span>
        (
            [name] </span>=> 照片3.<span>jpg
            [type] </span>=> image/<span>jpeg
            [tmp_name] </span>=> F:\wamp\tmp\php13D3.<span>tmp
            [error] </span>=> 0<span>
            [size] </span>=> 488293<span>
        )

)</span>

下面是拆分重组数组代码

<?<span>php
    

    </span><span>//</span><span>print_r($_FILES['file']);</span>
    <span>$arr</span>=<span>$_FILES</span>['file'<span>];
    </span><span>$files</span>=<span>array</span><span>();
    </span><span>for</span>(<span>$i</span>=0;<span>$i</span><<span>count</span>(<span>$arr</span>['name']);<span>$i</span>++<span>){
        </span><span>$files</span>[<span>$i</span>]['name']=<span>$arr</span>['name'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['type']=<span>$arr</span>['type'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['tmp_name']=<span>$arr</span>['tmp_name'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['error']=<span>$arr</span>['error'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['size']=<span>$arr</span>['size'][<span>$i</span><span>];
    }

    </span><span>print_r</span>(<span>$files</span>);<br />?>

 

剩下的东西就简单了，重复单文件上传的步骤，遍历处理一遍该数组就行了。

代码如下：

<?<span>php
    

    </span><span>//</span><span>print_r($_FILES['file']);</span>
    <span>$arr</span>=<span>$_FILES</span>['file'<span>];
    </span><span>$files</span>=<span>array</span><span>();
    </span><span>for</span>(<span>$i</span>=0;<span>$i</span><<span>count</span>(<span>$arr</span>['name']);<span>$i</span>++){<span>//</span><span>count()统计数组键值name长度</span>
        <span>$files</span>[<span>$i</span>]['name']=<span>$arr</span>['name'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['type']=<span>$arr</span>['type'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['tmp_name']=<span>$arr</span>['tmp_name'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['error']=<span>$arr</span>['error'][<span>$i</span><span>];
        </span><span>$files</span>[<span>$i</span>]['size']=<span>$arr</span>['size'][<span>$i</span><span>];
    }

    </span><span>for</span>(<span>$i</span>=0;<span>$i</span><<span>count</span>(<span>$files</span>);<span>$i</span>++<span>){
    </span><span>//</span><span>取得上传文件信息</span>
    <span>$fileName</span>=<span>$files</span>[<span>$i</span>]['name'<span>];
    </span><span>$fileType</span>=<span>$files</span>[<span>$i</span>]['type'<span>];
    </span><span>$fileError</span>=<span>$files</span>[<span>$i</span>]['type'<span>];
    </span><span>$fileSize</span>=<span>$files</span>[<span>$i</span>]['size'<span>];
    </span><span>$tempName</span>=<span>$files</span>[<span>$i</span>]['tmp_name'];<span>//</span><span>临时文件名
    
    //定义上传文件类型</span>
    <span>$typeList</span> = <span>array</span>("image/jpeg","image/jpg","image/png","image/gif"); <span>//</span><span>定义允许的类型</span>

    <span>if</span>(<span>$fileError</span>>0<span>){
            </span><span>//</span><span>上传文件错误编号判断</span>
            <span>switch</span> (<span>$fileError</span><span>) {
                </span><span>case</span> 1:
                    <span>$message</span>="上传的文件超过了php.ini 中 upload_max_filesize 选项限制的值。"<span>; 
                    </span><span>break</span><span>;
                </span><span>case</span> 2:
                    <span>$message</span>="上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。"<span>; 
                    </span><span>break</span><span>;
                </span><span>case</span> 3:
                    <span>$message</span>="文件只有部分被上传。"<span>; 
                    </span><span>break</span><span>;
                </span><span>case</span> 4:
                    <span>$message</span>="没有文件被上传。"<span>;
                    </span><span>break</span><span>;
                </span><span>case</span> 6:
                    <span>$message</span>="找不到临时文件夹。"<span>; 
                    </span><span>break</span><span>;
                </span><span>case</span> 7:
                    <span>$message</span>="文件写入失败"<span>; 
                    </span><span>break</span><span>;
                </span><span>case</span> 8:
                    <span>$message</span>="由于PHP的扩展程序中断了文件上传"<span>;
                    </span><span>break</span><span>;
            }

            </span><span>exit</span>("文件上传失败：".<span>$message</span><span>);

        }
    </span><span>if</span>(!<span>is_uploaded_file</span>(<span>$tempName</span><span>)){
        </span><span>//</span><span>判断是否是POST上传过来的文件</span>
        <span>exit</span>("不是通过HTTP POST方式上传上来的"<span>);
    }</span><span>else</span><span>{
        </span><span>if</span>(!<span>in_array</span>(<span>$fileType</span>, <span>$typeList</span><span>)){
            </span><span>exit</span>("上传的文件不是指定类型"<span>);
        }</span><span>else</span><span>{
            </span><span>if</span>(!<span>getimagesize</span>(<span>$tempName</span><span>)){
                </span><span>//</span><span>避免用户上传恶意文件,如把病毒文件扩展名改为图片格式</span>
                <span>exit</span>("上传的文件不是图片"<span>);
            }
        }
            </span><span>if</span>(<span>$fileSize</span>>1000000<span>){
                </span><span>//</span><span>对特定表单的上传文件限制大小</span>
                <span>exit</span>("上传文件超出限制大小"<span>);
            }</span><span>else</span><span>{
                </span><span>//</span><span>避免上传文件的中文名乱码</span>
                <span>$fileName</span>=<span>iconv</span>("UTF-8", "GBK", <span>$fileName</span>);<span>//</span><span>把iconv抓取到的字符编码从utf-8转为gbk输出</span>
                <span>$fileName</span>=<span>str_replace</span>(".", <span>time</span>().".", <span>$fileName</span>);<span>//</span><span>在图片名称后加入时间戳，避免重名文件覆盖</span>
                <span>if</span>(<span>move_uploaded_file</span>(<span>$tempName</span>, "uploads/".<span>$fileName</span><span>)){
                    </span><span>echo</span> "上传文件成功！"<span>;
                }</span><span>else</span><span>{
                    </span><span>echo</span> "上传文件失败"<span>;
                }
            }

        }

    }
</span>?>

 

效果如下：

陳述
本文內容由網友自願投稿，版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容，請聯絡admin@php.cn

熱AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智慧驅動的應用程序，用於創建逼真的裸體照片

AI Clothes Remover

AI Clothes Remover

用於從照片中去除衣服的線上人工智慧工具。

Undress AI Tool

Undress AI Tool

免費脫衣圖片

Clothoff.io

Clothoff.io

AI脫衣器

Video Face Swap

Video Face Swap

使用我們完全免費的人工智慧換臉工具，輕鬆在任何影片中換臉！

顯示更多

熱門文章

<🎜>：種植花園 - 完整的突變指南
3 週前ByDDD
<🎜>：泡泡膠模擬器無窮大 - 如何獲取和使用皇家鑰匙
3 週前By尊渡假赌尊渡假赌尊渡假赌
如何修復KB5055612無法在Windows 10中安裝？
3 週前ByDDD
北端：融合系統，解釋
3 週前By尊渡假赌尊渡假赌尊渡假赌
Mandragora：巫婆樹的耳語 - 如何解鎖抓鉤
3 週前By尊渡假赌尊渡假赌尊渡假赌
顯示更多

熱工具

禪工作室 13.0.1

禪工作室 13.0.1

強大的PHP整合開發環境

Dreamweaver Mac版

Dreamweaver Mac版

視覺化網頁開發工具

MantisBT

MantisBT

Mantis是一個易於部署的基於Web的缺陷追蹤工具，用於幫助產品缺陷追蹤。它需要PHP、MySQL和一個Web伺服器。請查看我們的演示和託管服務。

SublimeText3漢化版

SublimeText3漢化版

中文版，非常好用

SublimeText3 英文版

SublimeText3 英文版

推薦：為Win版本，支援程式碼提示！

顯示更多

熱門話題

Java教學
1665
14
CakePHP 教程
1423
52
Laravel 教程
1321
25
PHP教程
1269
29
C# 教程
1249
24
顯示更多