后端开发|php教程
php,多文件上传
后端开发-php教程
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<?php
class UploadModel
{
protected $keys;
protected $err = array();
protected $target;
protected $exts;
protected $maxSize;
protected $randName;
protected $files = array();
/**
* 初始化变量
*/
public function __construct()
{
$this->exts = array(jpeg,jpg,gif,png,zip, ar);
$this->maxSize = 1024*1024*2;
$this->target = dirname(__FILE__) . /upload/;
$this->randName = true;
$this->keys = $this->getKeys();
}
/**
* 获取 file 的名称
*/
protected function getKeys()
{
$keys = array_keys($_FILES);
return $keys;
}
/**
* 设置不同类型的变量
*/
public function __set($name, $value)
{
$property = array( arget,exts,maxSize, andName);
if(!in_array($name, $property)) return false;
switch(strval($name))
{
case arget:
$this->$name = Configure::read(app_path) . $value;
break;
case exts:
$this->$name = explode(,, $value);
break;
case andName:
if($value === true || $value == 1)
{
$this->$name = true;
}
else {
$this->$name = false;
}
break;
default:
$this->$name = $value;
}
}
/**
* 移动上传的文件到指定的目录
* @param $fileName 移动单个文件名称的时候，对上传的文件重新命名
*/
public function save($fileName)
{
$this->err = array();
$this->files = array();
if(!file_exists($this->target)) {
mkdir($this->target);
chmod($this->target, 0777);
}
foreach($this->keys as $key)
{
if(is_array($_FILES[$key][ ame]))
{
$count = count($_FILES[$key][ ame]);
for($i=0; $i<$count; $i++)
{
$keys = array_keys($_FILES[$key]);
foreach($keys as $item)
{
$file[$item] = $_FILES[$key][$item][$i];
}
$this->upload($file, $fileName);
}
return (count($this->err) > 0)? false:true;
}
else {
return $this->upload($_FILE[$key], $fileName);
}
}
}
/** 内部处理上传文件的过程 */
protected function upload($file, $fileName)
{
if(!is_uploaded_file($file[ mp_name])) return false;
if(!$this->checkExt($file)) return false;
if(!$this->checkSize($file)) return false;
if($this->randName)
{
$newFileName = $this->target . date(YmdHis, time()) . rand(0,9) . . . $this->getExt($file[ ame]);
}
elseif(emptyempty($fileName))
{
$newFileName = $this->target . / . $file[ ame];
}
else {
$newFileName = $this->target . / . $fileName;
}
$result = move_uploaded_file($file[ mp_name], $newFileName);
if(!$result)
{
return false;
}
else {
$this->files[] = str_replace($this->target, $newFileName);
return true;
}
}
/**
* 是否是可上传的文件类型
* @param $file 文件对象
*/
public function checkExt($file)
{
if(!in_array($this->getExt($file[ ame]), $this->exts))
{
$this->err[] = $file[ ame].:ext;
return false;
}
else {
return true;
}
}
/**
* 获取文件后缀名
*/
public function getExt($fileName)
{
$pos = strrpos($fileName, .)+1;
return substr($fileName, $pos);
}
/**
* 检查文件大小是否合法
*/
public function checkSize($file)
{
if($size > $this->maxSize)
{
$this->err[] = $file[ ame].:max;
return false;
}
else {
return true;
}
}
/**
* 取得已经上传的文件名称
*/
public function getFiles()
{
return $this->files;
}
}
使用实例：
include uploaded.model.php;
$U = new UploadModel();
$U->target = /tmp/;
$U->exts = jpg,gif;
$U->maxSize = 1024*275; //275KB
$U->save();
$files = $U->getFiles();
print_r($files);
include uploaded.model.php;
$U = new UploadModel();
$U->target = /tmp/;
$U->exts = jpg,gif;
$U->maxSize = 1024*275; //275KB
$U->save();
$files = $U->getFiles();
print_r($files);
在 MayFish 里的使用实例：
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public function up()
{
$U = M(SYS, upload);
$U->target = /tmp/;
$U->exts = jpg,gif;
$U->maxSize = 1024*275; //275KB
$U->save();
header(Location:/?a=upload);
}
public function up()
{
$U = M(SYS, upload);
$U->target = /tmp/;
$U->exts = jpg,gif;
$U->maxSize = 1024*275; //275KB
$U->save();
header(Location:/?a=upload);
}
前台代码：
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