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845天前<?php |
//文件和图片上传类 |
/* |
使用方法： |
function _upload($upload_dir){ |
$upload = new UploadFile(); |
//设置上传文件大小 |
$upload->maxSize=1024*1024*2;//最大2M |
//设置上传文件类型 |
$upload->allowExts = explode(',','jpg,gif,png,bmp'); |
//设置附件上传目录 |
$upload->savePath ='../images/'.$upload_dir."/"; |
$upload->saveRule = cp_uniqid; |
if(!$upload->upload()) |
{ |
//捕获上传异常 |
$this->error($upload->getErrorMsg()); |
} |
else |
{ |
//取得成功上传的文件信息 |
return $upload->getUploadFileInfo(); |
} |
} |
*/ |
class UploadFile{ |
// 上传文件的最大值 |
public $maxSize = -1; |
// 是否支持多文件上传 |
public $supportMulti = true; |
// 允许上传的文件后缀 |
// 留空不作后缀检查 |
public $allowExts = array(); |
// 允许上传的文件类型 |
// 留空不做检查 |
public $allowTypes = array(); |
// 使用对上传图片进行缩略图处理 |
public $thumb = false; |
// 缩略图最大宽度 |
public $thumbMaxWidth; |
// 缩略图最大高度 |
public $thumbMaxHeight; |
// 缩略图前缀 |
public $thumbPrefix = 'thumb_'; |
public $thumbSuffix = ''; |
// 缩略图保存路径 |
public $thumbPath = ''; |
// 缩略图文件名 |
public $thumbFile = ''; |
// 是否移除原图 |
public $thumbRemoveOrigin = false; |
// 压缩图片文件上传 |
public $zipImages = false; |
// 启用子目录保存文件 |
public $autoSub = false; |
// 子目录创建方式 可以使用hash date |
public $subType = 'hash'; |
public $dateFormat = 'Ymd'; |
public $hashLevel = 1; // hash的目录层次 |
// 上传文件保存路径 |
public $savePath = ''; |
public $autoCheck = true; // 是否自动检查附件 |
// 存在同名是否覆盖 |
public $uploadReplace = false; |
// 上传文件命名规则 |
// 例如可以是 time uniqid com_create_guid 等 |
// 必须是一个无需任何参数的函数名 可以使用自定义函数 |
public $saveRule = ''; |
// 上传文件Hash规则函数名 |
// 例如可以是 md5_file sha1_file 等 |
public $hashType = 'md5_file'; |
// 错误信息 |
private $error = ''; |
// 上传成功的文件信息 |
private $uploadFileInfo ; |
/** |
+---------------------------------------------------------- |
* 架构函数 |
+---------------------------------------------------------- |
* @access public |
+---------------------------------------------------------- |
*/ |
public function __construct($maxSize='',$allowExts='',$allowTypes='',$savePath='',$saveRule='') |
{ |
if(!empty($maxSize) && is_numeric($maxSize)) { |
$this->maxSize = $maxSize; |
} |
if(!empty($allowExts)) { |
if(is_array($allowExts)) { |
$this->allowExts = array_map('strtolower',$allowExts); |
}else { |
$this->allowExts = explode(',',strtolower($allowExts)); |
} |
} |
if(!empty($allowTypes)) { |
if(is_array($allowTypes)) { |
$this->allowTypes = array_map('strtolower',$allowTypes); |
}else { |
$this->allowTypes = explode(',',strtolower($allowTypes)); |
} |
} |
if(!empty($savePath)) { |
$this->savePath = $savePath; |
} |
if(!empty($saveRule)) { |
$this->saveRule = $saveRule; |
} |
} |
private function save($file) |
{ |
$filename = $file['savepath'].$file['savename']; |
if(!$this->uploadReplace && is_file($filename)) { |
// 不覆盖同名文件 |
$this->error = '文件已经存在！'.$filename; |
return false; |
} |
// 如果是图像文件 检测文件格式 |
if( in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png','swf')) && false === getimagesize($file['tmp_name'])) { |
$this->error = '非法图像文件'; |
return false; |
} |
if(!move_uploaded_file($file['tmp_name'], iconv('utf-8','gbk',$filename))) { |
$this->error = '文件上传保存错误！'; |
return false; |
} |
if($this->thumb && in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png'))) { |
$image = getimagesize($filename); |
if(false !== $image) { |
//是图像文件生成缩略图 |
$thumbWidth = explode(',',$this->thumbMaxWidth); |
$thumbHeight = explode(',',$this->thumbMaxHeight); |
$thumbPrefix = explode(',',$this->thumbPrefix); |
$thumbSuffix = explode(',',$this->thumbSuffix); |
$thumbFile = explode(',',$this->thumbFile); |
$thumbPath = $this->thumbPath?$this->thumbPath:$file['savepath']; |
// 生成图像缩略图 |
if(file_exists(dirname(__FILE__).'/Image.class.php')) |
{ |
require_once(dirname(__FILE__).'/Image.class.php'); |
$realFilename = $this->autoSub?basename($file['savename']):$file['savename']; |
for($i=0,$len=count($thumbWidth); $i<$len; $i++) { |
$thumbname = $thumbPath.$thumbPrefix[$i].substr($realFilename,0,strrpos($realFilename, '.')).$thumbSuffix[$i].'.'.$file['extension']; |
Image::thumb($filename,$thumbname,'',$thumbWidth[$i],$thumbHeight[$i],true); |
} |
if($this->thumbRemoveOrigin) { |
// 生成缩略图之后删除原图 |
unlink($filename); |
} |
} |
} |
} |
if($this->zipImags) { |
// TODO 对图片压缩包在线解压 |
} |
return true; |
} |
/** |
+---------------------------------------------------------- |
* 上传文件 |
+---------------------------------------------------------- |
* @access public |
+---------------------------------------------------------- |
* @param string $savePath 上传文件保存路径 |
+---------------------------------------------------------- |
* @return string |
+---------------------------------------------------------- |
* @throws ThinkExecption |
+---------------------------------------------------------- |
*/ |
public function upload($savePath ='') |
{ |
//如果不指定保存文件名，则由系统默认 |
if(empty($savePath)) |
$savePath = $this->savePath; |
// 检查上传目录 |
if(!is_dir($savePath)) { |
// 检查目录是否编码后的 |
if(is_dir(base64_decode($savePath))) { |
$savePath = base64_decode($savePath); |
}else{ |
// 尝试创建目录 |
if(!mkdir($savePath)){ |
$this->error = '上传目录'.$savePath.'不存在'; |
return false; |
} |
} |
}else { |
if(!is_writeable($savePath)) { |
$this->error = '上传目录'.$savePath.'不可写'; |
return false; |
} |
} |
$fileInfo = array(); |
$isUpload = false; |
// 获取上传的文件信息 |
// 对$_FILES数组信息处理 |
$files = $this->dealFiles($_FILES); |
foreach($files as $key => $file) { |
//过滤无效的上传 |
if(!empty($file['name'])) { |
//登记上传文件的扩展信息 |
$file['key'] = $key; |
$file['extension'] = $this->getExt($file['name']); |
$file['savepath'] = $savePath; |
$file['savename'] = $this->getSaveName($file); |
// 自动检查附件 |
if($this->autoCheck) { |
if(!$this->check($file)) |
return false; |
} |
//保存上传文件 |
if(!$this->save($file)) return false; |
/* |
if(function_exists($this->hashType)) { |
$fun = $this->hashType; |
$file['hash'] = $fun(auto_charset($file['savepath'].$file['savename'],'utf-8','gbk')); |
} |
*/ |
//上传成功后保存文件信息，供其他地方调用 |
unset($file['tmp_name'],$file['error']); |
$fileInfo[] = $file; |
$isUpload = true; |
} |
} |
if($isUpload) { |
$this->uploadFileInfo = $fileInfo; |
return true; |
}else { |
$this->error = '没有选择上传文件'; |
return false; |
} |
} |
/** |
+---------------------------------------------------------- |
* 转换上传文件数组变量为正确的方式 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param array $files 上传的文件变量 |
+---------------------------------------------------------- |
* @return array |
+---------------------------------------------------------- |
*/ |
private function dealFiles($files) { |
$fileArray = array(); |
foreach ($files as $file){ |
if(is_array($file['name'])) { |
$keys = array_keys($file); |
$count = count($file['name']); |
for ($i=0; $i<$count; $i++) { |
foreach ($keys as $key) |
$fileArray[$i][$key] = $file[$key][$i]; |
} |
}else{ |
$fileArray = $files; |
} |
break; |
} |
return $fileArray; |
} |
/** |
+---------------------------------------------------------- |
* 获取错误代码信息 |
+---------------------------------------------------------- |
* @access public |
+---------------------------------------------------------- |
* @param string $errorNo 错误号码 |
+---------------------------------------------------------- |
* @return void |
+---------------------------------------------------------- |
* @throws ThinkExecption |
+---------------------------------------------------------- |
*/ |
protected function error($errorNo) |
{ |
switch($errorNo) { |
case 1: |
$this->error = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值'; |
break; |
case 2: |
$this->error = '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: |
$this->error = '文件只有部分被上传'; |
break; |
case 4: |
$this->error = '没有文件被上传'; |
break; |
case 6: |
$this->error = '找不到临时文件夹'; |
break; |
case 7: |
$this->error = '文件写入失败'; |
break; |
default: |
$this->error = '未知上传错误！'; |
} |
return ; |
} |
/** |
+---------------------------------------------------------- |
* 根据上传文件命名规则取得保存文件名 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param string $filename 数据 |
+---------------------------------------------------------- |
* @return string |
+---------------------------------------------------------- |
*/ |
private function getSaveName($filename) |
{ |
$rule = $this->saveRule; |
if(empty($rule)) {//没有定义命名规则，则保持文件名不变 |
$saveName = $filename['name']; |
}else { |
if(function_exists($rule)) { |
//使用函数生成一个唯一文件标识号 |
$saveName = $rule().".".$filename['extension']; |
}else { |
//使用给定的文件名作为标识号 |
$saveName = $rule.".".$filename['extension']; |
} |
} |
if($this->autoSub) { |
// 使用子目录保存文件 |
$saveName = $this->getSubName($filename).'/'.$saveName; |
} |
return $saveName; |
} |
/** |
+---------------------------------------------------------- |
* 获取子目录的名称 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param array $file 上传的文件信息 |
+---------------------------------------------------------- |
* @return string |
+---------------------------------------------------------- |
*/ |
private function getSubName($file) |
{ |
switch($this->subType) { |
case 'date': |
$dir = date($this->dateFormat,time()); |
break; |
case 'hash': |
default: |
$name = md5($file['savename']); |
$dir = ''; |
for($i=0;$i<$this->hashLevel;$i++) { |
$dir .= $name{0}.'/'; |
} |
break; |
} |
if(!is_dir($file['savepath'].$dir)) { |
mkdir($file['savepath'].$dir); |
} |
return $dir; |
} |
/** |
+---------------------------------------------------------- |
* 检查上传的文件 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param array $file 文件信息 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function check($file) { |
if($file['error']!== 0) { |
//文件上传失败 |
//捕获错误代码 |
$this->error($file['error']); |
return false; |
} |
//检查文件Mime类型 |
if(!$this->checkType($file['type'])) { |
$this->error = '上传文件MIME类型不允许！'; |
return false; |
} |
//检查文件类型 |
if(!$this->checkExt($file['extension'])) { |
$this->error ='上传文件类型不允许'; |
return false; |
} |
//文件上传成功，进行自定义规则检查 |
//检查文件大小 |
if(!$this->checkSize($file['size'])) { |
$this->error = '上传文件大小超出限制！'; |
return false; |
} |
//检查是否合法上传 |
if(!$this->checkUpload($file['tmp_name'])) { |
$this->error = '非法上传文件！'; |
return false; |
} |
return true; |
} |
/** |
+---------------------------------------------------------- |
* 检查上传的文件类型是否合法 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param string $type 数据 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function checkType($type) |
{ |
if(!empty($this->allowTypes)) |
return in_array(strtolower($type),$this->allowTypes); |
return true; |
} |
/** |
+---------------------------------------------------------- |
* 检查上传的文件后缀是否合法 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param string $ext 后缀名 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function checkExt($ext) |
{ |
if(!empty($this->allowExts)) |
return in_array(strtolower($ext),$this->allowExts,true); |
return true; |
} |
/** |
+---------------------------------------------------------- |
* 检查文件大小是否合法 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param integer $size 数据 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function checkSize($size) |
{ |
return !($size > $this->maxSize) || (-1 == $this->maxSize); |
} |
/** |
+---------------------------------------------------------- |
* 检查文件是否非法提交 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param string $filename 文件名 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function checkUpload($filename) |
{ |
return is_uploaded_file($filename); |
} |
/** |
+---------------------------------------------------------- |
* 取得上传文件的后缀 |
+---------------------------------------------------------- |
* @access private |
+---------------------------------------------------------- |
* @param string $filename 文件名 |
+---------------------------------------------------------- |
* @return boolean |
+---------------------------------------------------------- |
*/ |
private function getExt($filename) |
{ |
$pathinfo = pathinfo($filename); |
return $pathinfo['extension']; |
} |
/** |
+---------------------------------------------------------- |
* 取得上传文件的信息 |
+---------------------------------------------------------- |
* @access public |
+---------------------------------------------------------- |
* @return array |
+---------------------------------------------------------- |
*/ |
public function getUploadFileInfo() |
{ |
return $this->uploadFileInfo; |
} |
/** |
+---------------------------------------------------------- |
* 取得最后一次错误信息 |
+---------------------------------------------------------- |
* @access public |
+---------------------------------------------------------- |
* @return string |
+---------------------------------------------------------- |
*/ |
public function getErrorMsg() |
{ |
return $this->error; |
} |
}//类定义结束 |
?> |
