php 生成自动创建文件夹并上传文件的示例代码

<?
session_start();
if($_session['company']=='')
{
 //exit();
}
?><?php //上传图片

$uptypes=array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','application/x-shockwave-flash','image/x-png');
$max_file_size=5000000;    //上传文件大小限制, 单位byte

  $addtime=date("ymd",time());     
  $testdir="./".$addtime."/";  
  if(file_exists($testdir)):  
  else:  
  mkdir($testdir,0777);  
  endif;  

$destination_folder=$addtime."/"; //上传文件路径
$imgpreview=1;    //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2;   //缩略图比例

if ($_server['request_method'] == 'post')
{
if (!is_uploaded_file($_files["pic"][tmp_name]))
//是否存在文件
{
echo "<font color='red'>文件不存在！</font>";
exit;
}

$file = $_files["pic"];
if($max_file_size < $file["size"])
//检查文件大小
{
echo "<font color='red'>文件太大！</font>";
exit;
   }

if(!in_array($file["type"], $uptypes))
//检查文件类型
{
echo "<font color='red'>只能上传图像文件或flash！</font>";
exit;
}

if(!file_exists($destination_folder))
 mkdir($destination_folder);

$filename=$file["tmp_name"];
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo[extension];
$picname = time().".".$ftype;
$destination = $destination_folder.$picname;

if (file_exists($destination) && $overwrite != true)
{
      echo "<font color='red'>同名文件已经存在了！</a>";
      exit;
}

if(!move_uploaded_file ($filename, $destination))
{
      echo "<font color='red'>上传文件出错！</a>";
      exit;
}

$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
}
?><?

$path = dirname(__file__);
require_once($path.'/../../module/factory.php');

$factory = new factory();
$bll_trade = $factory->factorytrade();
try {
$infor = new infor();
$infor->title = $_post['title'];
$infor->deposit = $_post['deposit'];
$infor->hire = $_post['hire'];
$infor->location = $_post['location'];
$infor->pic = $destination;
$infor->intro = $_post['intro'];
if($_session['memberid'] ==''){
 $infor->member->id='';
}else {
$infor->member->id = $_session['memberid'];}
if($_post['goodsbarcode'] ==''){
 $infor->goods->barcode = 0;
}else {
$infor->goods->barcode = $_post['goodsbarcode'];}
$infor->class->id = 0;//日后修改
$infor->issuetime = time();
$infor->viewnum = 0;
$infor->state = 1;//现在未定，日后修改
$infor->top = 0;
$infor->recommend = 0;
$infor->bookmember->id = 0;
$infor->booktime = 0;
$infor->bookremark = 0;
$bll_trade->createinfor($infor);
echo '发布信息成功！';
}
catch (exception $err){
 echo $err->getmessage();
}
?>