PHP实现的多文件上传类及用法示例

<?php
class uploadfiles{
 private $maxsize = '1000000'; //允许上传文件最大长度
 private $allowtype = array('jpg','png','gif','jpeg');//允许上传文件类型
 private $israndfile = true;//是否随机文件名
 private $filepath;//上传路径
 private $originname;//上传的源文件
 private $tmpfilename;//临时文件名
 private $newfilename;//新文件名
 private $filesize;//文件大小
 private $filetype;//文件类型
 private $errornum = 0;//错误号
 private $errormessg = array();//错误消息
 //对成员初始化
 function __construct($options = array()){
 foreach($options as $key=>$val){
  $key = strtolower($key);
  //查看传进来的数组里下标是否与成员属性相同
  //print_r(array_keys(get_class_vars(get_class($this))));
  if(!in_array($key,array_keys(get_class_vars(get_class($this))))){
  continue;
  }else{
  $this->setoption($key,$val);
  }
 }
 }
 private function setoption($key,$val){
   $this->$key = $val;
 //echo $this->errornum."<br>";
 }
 //检查文件上传路径
 private function checkfilepath(){
 //echo $this->filepath;
 if(empty($this->filepath)){
  $this->setoption('errornum',"-5");
  return false;
 }
 if(!file_exists($this->filepath) || !is_writable($this->filepath)){
  if(!@mkdir($this->filepath,0755)){
  $this->setoption('errornum','-4');
  return false;
  }
 }
 return true;
 }
 //获取错误信息
 private function geterror(){
 $str = "上传文件{$this->originname}出错---";
 switch($this->errornum){
  case 4; $str .= "没有文件被上传";break;
  case 3; $str .= "文件只被部分上传";break;
  case 2; $str .= "超过文件表单允许大小";break;
  case 1; $str .= "超过php.ini中允许大小";break;
  case -1; $str .= "未允许的类型";break;
  case -2; $str .= "文件过大，不能超过".$this->maxsize."个字节";break;
  case -3; $str .= "上传失败";break;
  case -4; $str .= "建立文件上传目录失败";break;
  case -5; $str .= "必须指定上传路径";break;
  default; $str .= "未知错误";
 }
 return $str."<br>";
 }
 //检查文件类型
 private function checkfiletype(){
 //echo $this->filetype;
 if(!in_array(strtolower($this->filetype),$this->allowtype)){
 $this->setoption('errornum','-1');
  return false;
 }else{
  return true;
 }
 }
 //检查文件大小
 private function checkfilesize(){
 if($this->filesize > $this->maxsize){
  $this->setoption('errornum','-2');
  return false;
 }else{
  return true;
 }
 }
 //处理随机文件名称
 private function prorandfile(){
 $ch = $this->israndfile;
 if($ch == 'true'){
  return true;
 }else{
  return false;
 }
 }
 //
 private function setfiles($name="",$tmp_name="",$size="",$error=""){
 //检查上传路径
 if(!$this->checkfilepath()){
  //$this->errormessg = $this->geterror();
  return false;
 }
 //echo $error."<br>";
 if($error){
 $this->setoption('errornum',$error);
  return false;
 }
 $arrstr  = explode('.',$name);
 $type   = end($arrstr);
 $this->setoption('originname',$name);
 $this->setoption('filesize',$size);
 $this->setoption('filetype',$type);
 $this->setoption('tmpfilename',$tmp_name);
 return true;
 }
 //检查是否有文件上传
 function checkfile($formname){
 if(!@$_files[$formname]){
  $this->setoption('errornum',4);
  return false;
 }else{
  return true;
 }
 }
 //上传文件
 function uploadefile($formname){
 if(!$this->checkfile($formname)){
  $this->errormessg = $this->geterror();
  return false;
 }
 $return  = true;
 $name   = @$_files[$formname]['name'];
 $tmp_name = @$_files[$formname]['tmp_name'];
 $size   = @$_files[$formname]['size'];
 $error  = @$_files[$formname]['error'];
 //$type   = $_files[$formname]['type'];
 if(is_array($name)){
  $errors = array();
  for($i=0; $i<count($name); $i++){
  if($this->setfiles($name[$i],$tmp_name[$i],$size[$i],$error[$i])){
   if(!$this->checkfilesize() || !$this->checkfiletype()){
   $errors[] = $this->geterror();
   $return = false;
   }
  }else{
   $errors[] = $this->geterror();
   $return = false;
  }
  if(!$return) $this->setfiles();
  }
  if($return){
  $newfilen = array();
  for($i=0; $i<count($name); $i++){
   if($this->setfiles($name[$i],$tmp_name[$i],$size[$i],$error[$i])){
   if(!$this->copyfile()){
    $errors[] = $this->geterror();
    $return = false;
   }else{
    $newfilen[] = $this->newfilename;
   }
   }
   $this->newfilename = $newfilen;
  }
  }
  //print_r($errors);
  $this->errormessg = $errors;
  //echo $errors;
  return $return;
 }else{
  if($this->setfiles($name,$tmp_name,$size,$error)){
  $return = true;
  if($error) var_dump($error);
  if($this->checkfilesize() && $this->checkfiletype()){
  }else{
   $return = false;
  }
  }else{
  $return = false;
  }
  if(!$return){
  $this->errormessg = $this->geterror();
  }
  return $return;
 }
 }
 //获取上传后的文件名
 function getnewfile(){
  return $this->newfilename;
 }
 //把文件拷贝到指定的路径
 function copyfile(){
 $filepath = rtrim($this->filepath,'/')."/";
 if(!$this->errornum){
  if($this->prorandfile()){
   $this->newfilename = date('ymdhis').rand(1000,9999).".".$this->filetype;
  }else{
   $this->newfilename = $this->originname;
  }
  if(!move_uploaded_file($this->tmpfilename,$filepath.$this->newfilename)){
  $this->setoption('errornum',-3);
  return false;
  }else{
  return true;
  }
 }else{
  return false;
 }
 }
 //上传错误后返回的消息
 function gteerror(){
  $err = $this->errormessg;
 return $err;
 }
 }
?>

<?php
//print_r($_files['spic']);
header('content-type:text/html;charset=utf-8');
//if(@$_files['spic'])echo "ddddddddd";;
include('upfiles.css.php');
$upfile = new uploadfiles(array('filepath'=>'./upload','allowtype'=>array('php','bmp','gif','jpg','png'),'israndfile'=>true,'maxsize'=>'1000000'));
if($upfile ->uploadefile('spic')){
 $arrfile = $upfile ->getnewfile();
 foreach($arrfile as $v){
 echo $v,"<br/>";
 }
 echo "上传成功！";
}else{
 $err = $upfile ->gteerror();
 if(is_array($err)){
 foreach($err as $v1){
  echo $v1,"<br/>";
 }
 }else{
 echo $err;
 }
 //var_dump($err);
}
//var_dump($upfile);
?>

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en"
"http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function check(){
 //alert('dddd');
 for(i=1; i<9; i++){
 if(document.getelementbyid('v'+i).value == ''){
  document.getelementbyid('v'+i).name = 'uu';
 }
 }
}
</script>
</head>
<body>
<form name="upfile" action="uploade.php" method="post" enctype="multipart/form-data">
<input type="file" name="spic[]" id="v1" /><br/>
<input type="file" name="spic[]" id="v2" /><br/>
<input type="file" name="spic[]" id="v3" /><br/>
<input type="file" name="spic[]" id="v4" /><br/>
<input type="file" name="spic[]" id="v5" /><br/>
<input type="file" name="spic[]" id="v6" /><br/>
<input type="file" name="spic[]" id="v7" /><br/>
<input type="file" name="spic[]" id="v8" /><br/>
<input type="submit" name="sub" value="提交" onclick="return check()" />
<input type="reset" name="res" value="重填" />
</form>
</body>
</html>