PHP实现文件上传下载——心在忙罢了
- WBOY원래의
- 2016-06-13 12:28:47807검색
PHP实现文件上传下载——心在忙而已
这一周都没有写什么东西，是啊，一周时间都没有学习太多新的东西，除了开车。
妈蛋啊，天天中午去学车然后两周没有午觉的日子还是很崩溃的，加上之后工作压力带来的心忙，宝宝不开心啊。
不过，也是自己不是那么能吃苦吧。那天看到的那句话怎么说的来着，我痛恨自己，在简单和困难之前，选择了前者；在什么什么面前，balabala，不是很鸡汤，但有点触动，愿少点矫情和娇气。
PHP实现文件上传与下载——来自mooc网
一、上传原理与配置
1.1 原理
将客户端文件上传到服务器端，再将服务器端的文件（临时文件）移动到指定目录即可。
1.2 客户端配置
所需：表单页面（选择上传文件）；
具体而言：发送方式为POST，添加enctype="multipart/form-data"属性，两者缺一不可（但是，优缺点并存，这里也限定了上传的方式和上传的文件之后的调用等方面，后面会说到）
<span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=UTF-8"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>Insert title here<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">="doAction.php"</span><span style="color: #ff0000;"> method</span><span style="color: #0000ff;">="post"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="上传"</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #ff00ff;">php</span><span style="color: #0000ff;">?></span><span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span>
先是表单页面（请自动忽略前端问题。。。），关键就是form的属性；另外就是input 中用到了type="file"这一点（体现到php的强大的拓展等等）。
然后是doAction
<span style="color: #000000;">php</span><span style="color: #008000;">//</span><span style="color: #008000;">$_FILES:文件上传变量//print_r($_FILES);</span><span style="color: #800080;">$filename</span>=<span style="color: #800080;">$_FILES</span>['myFile']['name'<span style="color: #000000;">];</span><span style="color: #800080;">$type</span>=<span style="color: #800080;">$_FILES</span>['myFile']['type'<span style="color: #000000;">];</span><span style="color: #800080;">$tmp_name</span>=<span style="color: #800080;">$_FILES</span>['myFile']['tmp_name'<span style="color: #000000;">];</span><span style="color: #800080;">$size</span>=<span style="color: #800080;">$_FILES</span>['myFile']['size'<span style="color: #000000;">];</span><span style="color: #800080;">$error</span>=<span style="color: #800080;">$_FILES</span>['myFile']['error'<span style="color: #000000;">];</span><span style="color: #008000;">//</span><span style="color: #008000;">将服务器上的临时文件移动到指定位置//方法一move_upload_file($tmp_name,$destination)//move_uploaded_file($tmp_name, "uploads/".$filename);//文件夹应提前建立好，不然报错//方法二copy($src,$des)//以上两个函数都是成功返回真，否则返回false//copy($tmp_name, "copies/".$filename);//注意，不能两个方法都对临时文件进行操作，临时文件似乎操作完就没了，我们试试反过来</span><span style="color: #008080;">copy</span>(<span style="color: #800080;">$tmp_name</span>, "copies/".<span style="color: #800080;">$filename</span><span style="color: #000000;">);</span><span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$tmp_name</span>, "uploads/".<span style="color: #800080;">$filename</span><span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;">能够实现，说明move那个函数基本上相当于剪切；copy就是copy，临时文件还在//另外，错误信息也是不一样的，遇到错误可以查看或者直接报告给用户</span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$error</span>==0<span style="color: #000000;">) { </span><span style="color: #0000ff;">echo</span> "上传成功！"<span style="color: #000000;">;}</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">switch</span> (<span style="color: #800080;">$error</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">case</span> 1: <span style="color: #0000ff;">echo</span> "超过了上传文件的最大值，请上传2M以下文件"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 2: <span style="color: #0000ff;">echo</span> "上传文件过多，请一次上传20个及以下文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3: <span style="color: #0000ff;">echo</span> "文件并未完全上传，请再次尝试！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 4: <span style="color: #0000ff;">echo</span> "未选择上传文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 5: <span style="color: #0000ff;">echo</span> "上传文件为0"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; }}</span>
先把print_r($_FILES)这个信息看一下
<span style="color: #000000;">Array( [myFile] => Array ( [name] => 梁博_简历.doc [type] => application/msword [tmp_name] => D:\wamp\tmp\php1D78.tmp [error] => 0 [size] => 75776 ))</span>
所以得到的是个二维数组，该怎么用，都是基本的东西（其实我喜欢降维再用）；
基本是一眼就懂的东西，不罗嗦，关键有两个：tmp_name临时文件名；error报错信息（代号，后面可以利用）；
然后这里看一下doAction后面一部分，利用报错信息来反馈给用户，需要说明的是为什么报错，和报错信息是什么都；
1.3 关于报错
--报错原因
基本上都是超过或者不符合服务器关于上传文件的配置，那么服务器端配置有哪些呢？
先考虑上传我们用了什么？POST，upload
所以在php.ini中找这么几项：
file_upload:On
upload_tmp_dir=——临时文件保存目录；
upload_max_filesize=2M
max_file_uploads=20——允许一次上传的最大文件数量（注意和上面那个的区别，有没有size，别乱想）
post_max_size=8M——post方式发送数据的最大值
其他相关配置
max_exectuion_time=-1——最大执行时间，避免程序不好占用服务器资源；
max_input_time=60
max_input_nesting_level=64——输入嵌套深度；
memory_limit=128M——最大单线程的独立内存使用量
总之都是有关资源的配置。
--错误号
以下（偷懒）引自http://blog.sina.com.cn/s/blog_3cdfaea201008utf.html
UPLOAD_ERR_OK 值：0; 没有错误发生，文件上传成功。
UPLOAD_ERR_INI_SIZE 值：1; 上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。
UPLOAD_ERR_FORM_SIZE 值：2; 上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。
UPLOAD_ERR_PARTIAL 值：3; 文件只有部分被上传。
UPLOAD_ERR_NO_FILE 值：4; 没有文件被上传。
注意：这个错误信息是第一步上传的信息，也就是上传到临时文件夹的情况，而不是move或者copy的情况。
二、上传相关限制
2.1 客户端限制
<span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">="doAction2.php"</span><span style="color: #ff0000;"> method</span><span style="color: #0000ff;">="post"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="hidden"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="MAX_FILE_SIZE"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="101321"</span> <span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile"</span><span style="color: #ff0000;"> accept</span><span style="color: #0000ff;">="image/jpeg,image/gif,text/html"</span><span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="上传"</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span></span></span></span></span></span>
这里用input的属性对上传文件的大小和类型进行了限制，但是个人感觉：一，html代码是“可见的”；二，常不起作用（没找到原因，但因为第一个我也想放弃它，知道就好。
2.2 服务器端限制
主要限制大小和类型，再有就是方式。
<span style="color: #000000;">php</span><span style="color: #008080;">header</span>('content-type:text/html;charset=utf-8'<span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;">接受文件，临时文件信息</span><span style="color: #800080;">$fileinfo</span>=<span style="color: #800080;">$_FILES</span>["myFile"];<span style="color: #008000;">//</span><span style="color: #008000;">降维操作</span><span style="color: #800080;">$filename</span>=<span style="color: #800080;">$fileinfo</span>["name"<span style="color: #000000;">];</span><span style="color: #800080;">$tmp_name</span>=<span style="color: #800080;">$fileinfo</span>["tmp_name"<span style="color: #000000;">];</span><span style="color: #800080;">$size</span>=<span style="color: #800080;">$fileinfo</span>["size"<span style="color: #000000;">];</span><span style="color: #800080;">$error</span>=<span style="color: #800080;">$fileinfo</span>["error"<span style="color: #000000;">];</span><span style="color: #800080;">$type</span>=<span style="color: #800080;">$fileinfo</span>["type"<span style="color: #000000;">];</span><span style="color: #008000;">//</span><span style="color: #008000;">服务器端设定限制</span><span style="color: #800080;">$maxsize</span>=10485760;<span style="color: #008000;">//</span><span style="color: #008000;">10M,10*1024*1024</span><span style="color: #800080;">$allowExt</span>=<span style="color: #0000ff;">array</span>('jpeg','jpg','png','tif');<span style="color: #008000;">//</span><span style="color: #008000;">允许上传的文件类型（拓展名</span><span style="color: #800080;">$ext</span>=<span style="color: #008080;">pathinfo</span>(<span style="color: #800080;">$filename</span>,PATHINFO_EXTENSION);<span style="color: #008000;">//</span><span style="color: #008000;">提取上传文件的拓展名//目的信息</span><span style="color: #800080;">$path</span>="uploads"<span style="color: #000000;">;</span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">file_exists</span>(<span style="color: #800080;">$path</span>)) { <span style="color: #008000;">//</span><span style="color: #008000;">当目录不存在，就创建目录</span> <span style="color: #008080;">mkdir</span>(<span style="color: #800080;">$path</span>,0777,<span style="color: #0000ff;">true</span><span style="color: #000000;">); </span><span style="color: #008080;">chmod</span>(<span style="color: #800080;">$path</span>, 0777<span style="color: #000000;">);}</span><span style="color: #008000;">//</span><span style="color: #008000;">$destination=$path."/".$filename;//得到唯一的文件名！防止因为文件名相同而产生覆盖</span><span style="color: #800080;">$uniName</span>=<span style="color: #008080;">md5</span>(<span style="color: #008080;">uniqid</span>(<span style="color: #008080;">microtime</span>(<span style="color: #0000ff;">true</span>),<span style="color: #0000ff;">true</span>)).<span style="color: #800080;">$ext</span>;<span style="color: #008000;">//</span><span style="color: #008000;">md5加密，uniqid产生唯一id，microtime做前缀</span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$error</span>==0<span style="color: #000000;">) { </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$size</span>><span style="color: #800080;">$maxsize</span><span style="color: #000000;">) { </span><span style="color: #0000ff;">exit</span>("上传文件过大！"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">in_array</span>(<span style="color: #800080;">$ext</span>, <span style="color: #800080;">$allowExt</span><span style="color: #000000;">)) { </span><span style="color: #0000ff;">exit</span>("非法文件类型"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">is_uploaded_file</span>(<span style="color: #800080;">$tmp_name</span><span style="color: #000000;">)) { </span><span style="color: #0000ff;">exit</span>("上传方式有误，请使用post方式"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (@<span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$tmp_name</span>, <span style="color: #800080;">$uniName</span>)) {<span style="color: #008000;">//</span><span style="color: #008000;">@错误抑制符，不让用户看到警告</span> <span style="color: #0000ff;">echo</span> "文件".<span style="color: #800080;">$filename</span>."上传成功!"<span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">echo</span> "文件".<span style="color: #800080;">$filename</span>."上传失败!"<span style="color: #000000;">; } </span><span style="color: #008000;">//</span><span style="color: #008000;">判断是否为真实图片（防止伪装成图片的病毒一类的</span> <span style="color: #0000ff;">if</span> (!<span style="color: #008080;">getimagesize</span>(<span style="color: #800080;">$tmp_name</span>)) {<span style="color: #008000;">//</span><span style="color: #008000;">getimagesize真实返回数组，否则返回false</span> <span style="color: #0000ff;">exit</span>("不是真正的图片类型"<span style="color: #000000;">); }}</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">switch</span> (<span style="color: #800080;">$error</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">case</span> 1: <span style="color: #0000ff;">echo</span> "超过了上传文件的最大值，请上传2M以下文件"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 2: <span style="color: #0000ff;">echo</span> "上传文件过多，请一次上传20个及以下文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3: <span style="color: #0000ff;">echo</span> "文件并未完全上传，请再次尝试！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 4: <span style="color: #0000ff;">echo</span> "未选择上传文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 7: <span style="color: #0000ff;">echo</span> "没有临时文件夹"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; }}</span>
这里，具体实现都有注释，每一步其实都可以自己试试的，很有趣。
2.3 封装
函数
<span style="color: #000000;">php</span><span style="color: #0000ff;">function</span> uploadFile(<span style="color: #800080;">$fileInfo</span>,<span style="color: #800080;">$path</span>,<span style="color: #800080;">$allowExt</span>,<span style="color: #800080;">$maxSize</span><span style="color: #000000;">){</span><span style="color: #800080;">$filename</span>=<span style="color: #800080;">$fileInfo</span>["name"<span style="color: #000000;">];</span><span style="color: #800080;">$tmp_name</span>=<span style="color: #800080;">$fileInfo</span>["tmp_name"<span style="color: #000000;">];</span><span style="color: #800080;">$size</span>=<span style="color: #800080;">$fileInfo</span>["size"<span style="color: #000000;">];</span><span style="color: #800080;">$error</span>=<span style="color: #800080;">$fileInfo</span>["error"<span style="color: #000000;">];</span><span style="color: #800080;">$type</span>=<span style="color: #800080;">$fileInfo</span>["type"<span style="color: #000000;">];</span><span style="color: #008000;">//</span><span style="color: #008000;">服务器端设定限制</span><span style="color: #800080;">$ext</span>=<span style="color: #008080;">pathinfo</span>(<span style="color: #800080;">$filename</span>,<span style="color: #000000;">PATHINFO_EXTENSION);</span><span style="color: #008000;">//</span><span style="color: #008000;">目的信息</span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">file_exists</span>(<span style="color: #800080;">$path</span><span style="color: #000000;">)) { </span><span style="color: #008080;">mkdir</span>(<span style="color: #800080;">$path</span>,0777,<span style="color: #0000ff;">true</span><span style="color: #000000;">); </span><span style="color: #008080;">chmod</span>(<span style="color: #800080;">$path</span>, 0777<span style="color: #000000;">);}</span><span style="color: #800080;">$uniName</span>=<span style="color: #008080;">md5</span>(<span style="color: #008080;">uniqid</span>(<span style="color: #008080;">microtime</span>(<span style="color: #0000ff;">true</span>),<span style="color: #0000ff;">true</span>)).'.'.<span style="color: #800080;">$ext</span><span style="color: #000000;">;</span><span style="color: #800080;">$destination</span>=<span style="color: #800080;">$path</span>."/".<span style="color: #800080;">$uniName</span><span style="color: #000000;">;</span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$error</span>==0<span style="color: #000000;">) { </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$size</span>><span style="color: #800080;">$maxSize</span><span style="color: #000000;">) { </span><span style="color: #0000ff;">exit</span>("上传文件过大！"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">in_array</span>(<span style="color: #800080;">$ext</span>, <span style="color: #800080;">$allowExt</span><span style="color: #000000;">)) { </span><span style="color: #0000ff;">exit</span>("非法文件类型"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (!<span style="color: #008080;">is_uploaded_file</span>(<span style="color: #800080;">$tmp_name</span><span style="color: #000000;">)) { </span><span style="color: #0000ff;">exit</span>("上传方式有误，请使用post方式"<span style="color: #000000;">); } </span><span style="color: #008000;">//</span><span style="color: #008000;">判断是否为真实图片（防止伪装成图片的病毒一类的</span> <span style="color: #0000ff;">if</span> (!<span style="color: #008080;">getimagesize</span>(<span style="color: #800080;">$tmp_name</span>)) {<span style="color: #008000;">//</span><span style="color: #008000;">getimagesize真实返回数组，否则返回false</span> <span style="color: #0000ff;">exit</span>("不是真正的图片类型"<span style="color: #000000;">); } </span><span style="color: #0000ff;">if</span> (@<span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$tmp_name</span>, <span style="color: #800080;">$destination</span>)) {<span style="color: #008000;">//</span><span style="color: #008000;">@错误抑制符，不让用户看到警告</span> <span style="color: #0000ff;">echo</span> "文件".<span style="color: #800080;">$filename</span>."上传成功!"<span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">echo</span> "文件".<span style="color: #800080;">$filename</span>."上传失败!"<span style="color: #000000;">; } }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">switch</span> (<span style="color: #800080;">$error</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">case</span> 1: <span style="color: #0000ff;">echo</span> "超过了上传文件的最大值，请上传2M以下文件"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 2: <span style="color: #0000ff;">echo</span> "上传文件过多，请一次上传20个及以下文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3: <span style="color: #0000ff;">echo</span> "文件并未完全上传，请再次尝试！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 4: <span style="color: #0000ff;">echo</span> "未选择上传文件！"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 7: <span style="color: #0000ff;">echo</span> "没有临时文件夹"<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; }}</span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$destination</span><span style="color: #000000;">;}</span>
调用
<span style="color: #000000;">php</span><span style="color: #008080;">header</span>('content-type:text/html;charset=utf-8'<span style="color: #000000;">);</span><span style="color: #800080;">$fileInfo</span>=<span style="color: #800080;">$_FILES</span>["myFile"<span style="color: #000000;">];</span><span style="color: #800080;">$maxSize</span>=10485760;<span style="color: #008000;">//</span><span style="color: #008000;">10M,10*1024*1024</span><span style="color: #800080;">$allowExt</span>=<span style="color: #0000ff;">array</span>('jpeg','jpg','png','tif'<span style="color: #000000;">);</span><span style="color: #800080;">$path</span>="uploads"<span style="color: #000000;">;</span><span style="color: #0000ff;">include_once</span> 'upFunc.php'<span style="color: #000000;">;uploadFile(</span><span style="color: #800080;">$fileInfo</span>, <span style="color: #800080;">$path</span>, <span style="color: #800080;">$allowExt</span>, <span style="color: #800080;">$maxSize</span>);
三、多文件的上传实现
3.1 利用单文件封装
<span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=UTF-8"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>Insert title here<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">="doAction5.php"</span><span style="color: #ff0000;"> method</span><span style="color: #0000ff;">="post"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile1"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile2"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile3"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile4"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="上传"</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span style="color: #000000;">php</span><span style="color: #008000;">//</span><span style="color: #008000;">print_r($_FILES);</span><span style="color: #008080;">header</span>('content-type:text/html;charset=utf-8'<span style="color: #000000;">);</span><span style="color: #0000ff;">include_once</span> 'upFunc.php'<span style="color: #000000;">;</span><span style="color: #0000ff;">foreach</span> (<span style="color: #800080;">$_FILES</span> <span style="color: #0000ff;">as</span> <span style="color: #800080;">$fileInfo</span><span style="color: #000000;">){ </span><span style="color: #800080;">$file</span>[]=uploadFile(<span style="color: #800080;">$fileInfo</span><span style="color: #000000;">);}</span>
这里的思路，从print_r($_FILES)中去找，打印出来看到是个二维数组，很简单，遍历去用就好了！
上面那个function的定义改一下，给定一些默认值
<span style="color: #0000ff;">function</span> uploadFile(<span style="color: #800080;">$fileInfo</span>,<span style="color: #800080;">$path</span>="uploads",<span style="color: #800080;">$allowExt</span>=<span style="color: #0000ff;">array</span>('jpeg','jpg','png','tif'),<span style="color: #800080;">$maxSize</span>=10485760){
这样子，简单是简单，但遇到一些问题。
正常的上传4个图片是没问题，但要是中间激活了函数中的exit，就会立即停止，导致其他图片也无法上传。
3.2 升级版封装
旨在实现针对多个或单个文件上传的封装
首先这样子写个静态文件
<span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=UTF-8"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>Insert title here<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">="doAction5.php"</span><span style="color: #ff0000;"> method</span><span style="color: #0000ff;">="post"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile[]"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile[]"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile[]"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile[]"</span> <span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="上传"</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
打印一下$_FILES
<span style="color: #000000;">Array( [myFile] => Array ( [name] => Array ( [0] => test32.png [1] => test32.png [2] => 333.png [3] => test41.png ) [type] => Array ( [0] => image/png [1] => image/png [2] => image/png [3] => image/png ) [tmp_name] => Array ( [0] => D:\wamp\tmp\php831C.tmp [1] => D:\wamp\tmp\php834C.tmp [2] => D:\wamp\tmp\php837C.tmp [3] => D:\wamp\tmp\php83BB.tmp ) [error] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 ) [size] => Array ( [0] => 46174 [1] => 46174 [2] => 34196 [3] => 38514 ) ))</span>
可以得到一个三维数组。
复杂是复杂了，但复杂的有规律，各项数值都在一起了，很方便我们取值！！
所以先得到文件信息，变成单文件处理那种信息
<span style="color: #0000ff;">function</span><span style="color: #000000;"> getFiles(){ </span><span style="color: #800080;">$i</span>=0<span style="color: #000000;">; </span><span style="color: #0000ff;">foreach</span>(<span style="color: #800080;">$_FILES</span> <span style="color: #0000ff;">as</span> <span style="color: #800080;">$file</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">is_string</span>(<span style="color: #800080;">$file</span>['name'])){ <span style="color: #008000;">//</span><span style="color: #008000;">单文件判定</span> <span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]=<span style="color: #800080;">$file</span><span style="color: #000000;">; </span><span style="color: #800080;">$i</span>++<span style="color: #000000;">; }</span><span style="color: #0000ff;">elseif</span>(<span style="color: #008080;">is_array</span>(<span style="color: #800080;">$file</span>['name'<span style="color: #000000;">])){ </span><span style="color: #0000ff;">foreach</span>(<span style="color: #800080;">$file</span>['name'] <span style="color: #0000ff;">as</span> <span style="color: #800080;">$key</span>=><span style="color: #800080;">$val</span>){ <span style="color: #008000;">//</span><span style="color: #008000;">我的天，这个$key用的diao</span> <span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]['name']=<span style="color: #800080;">$file</span>['name'][<span style="color: #800080;">$key</span><span style="color: #000000;">]; </span><span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]['type']=<span style="color: #800080;">$file</span>['type'][<span style="color: #800080;">$key</span><span style="color: #000000;">]; </span><span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]['tmp_name']=<span style="color: #800080;">$file</span>['tmp_name'][<span style="color: #800080;">$key</span><span style="color: #000000;">]; </span><span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]['error']=<span style="color: #800080;">$file</span>['error'][<span style="color: #800080;">$key</span><span style="color: #000000;">]; </span><span style="color: #800080;">$files</span>[<span style="color: #800080;">$i</span>]['size']=<span style="color: #800080;">$file</span>['size'][<span style="color: #800080;">$key</span><span style="color: #000000;">]; </span><span style="color: #800080;">$i</span>++<span style="color: #000000;">; } } } </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$files</span><span style="color: #000000;">; }</span>
然后之前的那种exit错误，就把exit改一下就好了，这里用res
<span style="color: #0000ff;">function</span> uploadFile(<span style="color: #800080;">$fileInfo</span>,<span style="color: #800080;">$path</span>='./uploads',<span style="color: #800080;">$flag</span>=<span style="color: #0000ff;">true</span>,<span style="color: #800080;">$maxSize</span>=1048576,<span style="color: #800080;">$allowExt</span>=<span style="color: #0000ff;">array</span>('jpeg','jpg','png','gif'<span style="color: #000000;">)){ </span><span style="color: #008000;">//</span><span style="color: #008000;">$flag=true; //$allowExt=array('jpeg','jpg','gif','png'); //$maxSize=1048576;//1M //判断错误号</span> <span style="color: #800080;">$res</span>=<span style="color: #0000ff;">array</span><span style="color: #000000;">(); </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$fileInfo</span>['error']===<span style="color: #000000;">UPLOAD_ERR_OK){ </span><span style="color: #008000;">//</span><span style="color: #008000;">检测上传得到小</span> <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$fileInfo</span>['size']><span style="color: #800080;">$maxSize</span><span style="color: #000000;">){ </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'上传文件过大'<span style="color: #000000;">; } </span><span style="color: #800080;">$ext</span>=getExt(<span style="color: #800080;">$fileInfo</span>['name'<span style="color: #000000;">]); </span><span style="color: #008000;">//</span><span style="color: #008000;">检测上传文件的文件类型</span> <span style="color: #0000ff;">if</span>(!<span style="color: #008080;">in_array</span>(<span style="color: #800080;">$ext</span>,<span style="color: #800080;">$allowExt</span><span style="color: #000000;">)){ </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'非法文件类型'<span style="color: #000000;">; } </span><span style="color: #008000;">//</span><span style="color: #008000;">检测是否是真实的图片类型</span> <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$flag</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">if</span>(!<span style="color: #008080;">getimagesize</span>(<span style="color: #800080;">$fileInfo</span>['tmp_name'<span style="color: #000000;">])){ </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'不是真实图片类型'<span style="color: #000000;">; } } </span><span style="color: #008000;">//</span><span style="color: #008000;">检测文件是否是通过HTTP POST上传上来的</span> <span style="color: #0000ff;">if</span>(!<span style="color: #008080;">is_uploaded_file</span>(<span style="color: #800080;">$fileInfo</span>['tmp_name'<span style="color: #000000;">])){ </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'文件不是通过HTTP POST方式上传上来的'<span style="color: #000000;">; } </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$res</span>) <span style="color: #0000ff;">return</span> <span style="color: #800080;">$res</span><span style="color: #000000;">; </span><span style="color: #008000;">//</span><span style="color: #008000;">$path='./uploads';</span> <span style="color: #0000ff;">if</span>(!<span style="color: #008080;">file_exists</span>(<span style="color: #800080;">$path</span><span style="color: #000000;">)){ </span><span style="color: #008080;">mkdir</span>(<span style="color: #800080;">$path</span>,0777,<span style="color: #0000ff;">true</span><span style="color: #000000;">); </span><span style="color: #008080;">chmod</span>(<span style="color: #800080;">$path</span>,0777<span style="color: #000000;">); } </span><span style="color: #800080;">$uniName</span>=<span style="color: #000000;">getUniName(); </span><span style="color: #800080;">$destination</span>=<span style="color: #800080;">$path</span>.'/'.<span style="color: #800080;">$uniName</span>.'.'.<span style="color: #800080;">$ext</span><span style="color: #000000;">; </span><span style="color: #0000ff;">if</span>(!<span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$fileInfo</span>['tmp_name'],<span style="color: #800080;">$destination</span><span style="color: #000000;">)){ </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'文件移动失败'<span style="color: #000000;">; } </span><span style="color: #800080;">$res</span>['mes']=<span style="color: #800080;">$fileInfo</span>['name'].'上传成功'<span style="color: #000000;">; </span><span style="color: #800080;">$res</span>['dest']=<span style="color: #800080;">$destination</span><span style="color: #000000;">; </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$res</span><span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #008000;">//</span><span style="color: #008000;">匹配错误信息</span> <span style="color: #0000ff;">switch</span> (<span style="color: #800080;">$fileInfo</span> ['error'<span style="color: #000000;">]) { </span><span style="color: #0000ff;">case</span> 1 : <span style="color: #800080;">$res</span>['mes'] = '上传文件超过了PHP配置文件中upload_max_filesize选项的值'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 2 : <span style="color: #800080;">$res</span>['mes'] = '超过了表单MAX_FILE_SIZE限制的大小'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3 : <span style="color: #800080;">$res</span>['mes'] = '文件部分被上传'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 4 : <span style="color: #800080;">$res</span>['mes'] = '没有选择上传文件'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 6 : <span style="color: #800080;">$res</span>['mes'] = '没有找到临时目录'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 7 : <span style="color: #0000ff;">case</span> 8 : <span style="color: #800080;">$res</span>['mes'] = '系统错误'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; } </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$res</span><span style="color: #000000;">; }}</span>
里面封装了两个小的
<span style="color: #0000ff;">function</span> getExt(<span style="color: #800080;">$filename</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">strtolower</span>(<span style="color: #008080;">pathinfo</span>(<span style="color: #800080;">$filename</span>,<span style="color: #000000;">PATHINFO_EXTENSION));}</span><span style="color: #008000;">/*</span><span style="color: #008000;">* * 产生唯一字符串 * @return string </span><span style="color: #008000;">*/</span><span style="color: #0000ff;">function</span><span style="color: #000000;"> getUniName(){ </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">md5</span>(<span style="color: #008080;">uniqid</span>(<span style="color: #008080;">microtime</span>(<span style="color: #0000ff;">true</span>),<span style="color: #0000ff;">true</span><span style="color: #000000;">));}</span>
然后静态中，用multiple属性实现多个文件的输入；
<span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=UTF-8"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>Insert title here<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">action</span><span style="color: #0000ff;">="doAction6.php"</span><span style="color: #ff0000;"> method</span><span style="color: #0000ff;">="POST"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span><span style="color: #000000;">请选择您要上传的文件：</span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="myFile[]"</span><span style="color: #ff0000;"> multiple</span><span style="color: #0000ff;">='multiple' </span><span style="color: #0000ff;">/><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="上传"</span><span style="color: #0000ff;">/></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span>
doAction6
<span style="color: #000000;">php </span><span style="color: #008000;">//</span><span style="color: #008000;">print_r($_FILES);</span><span style="color: #008080;">header</span>("content-type:text/html;charset=utf-8"<span style="color: #000000;">);</span><span style="color: #0000ff;">require_once</span> 'upFunc2.php'<span style="color: #000000;">;</span><span style="color: #0000ff;">require_once</span> 'common.func.php'<span style="color: #000000;">;</span><span style="color: #800080;">$files</span>=<span style="color: #000000;">getFiles();</span><span style="color: #008000;">//</span><span style="color: #008000;"> print_r($files);</span><span style="color: #0000ff;">foreach</span>(<span style="color: #800080;">$files</span> <span style="color: #0000ff;">as</span> <span style="color: #800080;">$fileInfo</span><span style="color: #000000;">){ </span><span style="color: #800080;">$res</span>=uploadFile(<span style="color: #800080;">$fileInfo</span><span style="color: #000000;">); </span><span style="color: #0000ff;">echo</span> <span style="color: #800080;">$res</span>['mes'],'<br>'<span style="color: #000000;">; </span><span style="color: #800080;">$uploadFiles</span>[]=@<span style="color: #800080;">$res</span>['dest'<span style="color: #000000;">];}</span><span style="color: #800080;">$uploadFiles</span>=<span style="color: #008080;">array_values</span>(<span style="color: #008080;">array_filter</span>(<span style="color: #800080;">$uploadFiles</span><span style="color: #000000;">));</span><span style="color: #008000;">//</span><span style="color: #008000;">print_r($uploadFiles);</span>
这样子的几个文件，就实现比较强大的面向过程的上传文件的功能（学的叫一个心酸。。。）；
四、面向对象的文件上传
（不是很写的动了。。。先粘过来，再说吧。。。
<span style="color: #000000;">php </span><span style="color: #0000ff;">class</span><span style="color: #000000;"> upload{ </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$fileName</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$maxSize</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$allowMime</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$allowExt</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$uploadPath</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$imgFlag</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$fileInfo</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$error</span><span style="color: #000000;">; </span><span style="color: #0000ff;">protected</span> <span style="color: #800080;">$ext</span><span style="color: #000000;">; </span><span style="color: #008000;">/*</span><span style="color: #008000;">* * @param string $fileName * @param string $uploadPath * @param string $imgFlag * @param number $maxSize * @param array $allowExt * @param array $allowMime </span><span style="color: #008000;">*/</span> <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> __construct(<span style="color: #800080;">$fileName</span>='myFile',<span style="color: #800080;">$uploadPath</span>='./uploads',<span style="color: #800080;">$imgFlag</span>=<span style="color: #0000ff;">true</span>,<span style="color: #800080;">$maxSize</span>=5242880,<span style="color: #800080;">$allowExt</span>=<span style="color: #0000ff;">array</span>('jpeg','jpg','png','gif'),<span style="color: #800080;">$allowMime</span>=<span style="color: #0000ff;">array</span>('image/jpeg','image/png','image/gif'<span style="color: #000000;">)){ </span><span style="color: #800080;">$this</span>->fileName=<span style="color: #800080;">$fileName</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->maxSize=<span style="color: #800080;">$maxSize</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->allowMime=<span style="color: #800080;">$allowMime</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->allowExt=<span style="color: #800080;">$allowExt</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->uploadPath=<span style="color: #800080;">$uploadPath</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->imgFlag=<span style="color: #800080;">$imgFlag</span><span style="color: #000000;">; </span><span style="color: #800080;">$this</span>->fileInfo=<span style="color: #800080;">$_FILES</span>[<span style="color: #800080;">$this</span>-><span style="color: #000000;">fileName]; } </span><span style="color: #008000;">/*</span><span style="color: #008000;">* * 检测上传文件是否出错 * @return boolean </span><span style="color: #008000;">*/</span> <span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> checkError(){ </span><span style="color: #0000ff;">if</span>(!<span style="color: #008080;">is_null</span>(<span style="color: #800080;">$this</span>-><span style="color: #000000;">fileInfo)){ </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$this</span>->fileInfo['error']>0<span style="color: #000000;">){ </span><span style="color: #0000ff;">switch</span>(<span style="color: #800080;">$this</span>->fileInfo['error'<span style="color: #000000;">]){ </span><span style="color: #0000ff;">case</span> 1: <span style="color: #800080;">$this</span>->error='超过了PHP配置文件中upload_max_filesize选项的值'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 2: <span style="color: #800080;">$this</span>->error='超过了表单中MAX_FILE_SIZE设置的值'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3: <span style="color: #800080;">$this</span>->error='文件部分被上传'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 4: <span style="color: #800080;">$this</span>->error='没有选择上传文件'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 6: <span style="color: #800080;">$this</span>->error='没有找到临时目录'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 7: <span style="color: #800080;">$this</span>->error='文件不可写'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 8: <span style="color: #800080;">$this</span>->error='由于PHP的扩展程序中断文件上传'<span style="color: #000000;">; </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; } </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">; } }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #800080;">$this</span>->error='文件上传出错'<span style="color: #000000;">; </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">; } } </span><span style="color: #008000;">/*</span><span style="color: #008000;">* * 检测上传文件的大小 * @return boolean </span><span style="color: #008000;">*/</span> <span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> checkSize(){ </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$this</span>->fileInfo['size']><span style="color: #800080;">$this</span>-><span style="color: #000000;">maxSize){ </span><span style="color: #800080;">$this</span>->error='上传文件过大'<span style="color: #000000;">; </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">; } </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">; } </span><span style="color: #008000;">/*</span><span style="color: #008000;">* * 检测扩展名 </span>성명：
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