<div class="codebody" id="code81630">
<?PHP
$uploaddir = "upfiles/";//设置文件保存目录 注意包含/
$type=array("jpg","gif","bmp","jpeg","png");//设置允许上传文件的类型
$patch="upload/";//程序所在路径 //获取文件后缀名函数
function fileext($filename)
{
return substr(strrchr($filename,'.'),1);
}
//生成随机文件名函数
function random($length)
{
$hash = 'CR-';
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for($i = 0; $i < $length; $i++)
{
$hash .= $chars[mt_rand(0,$max)];
}
return $hash;
} $a=strtolower(fileext($_FILES['file']['name']));
//判断文件类型
if(!in_array(strtolower(fileext($_FILES['file']['name'])),$type))
{
$text=implode(",",$type);
echo "您只能上传以下类型文件: ",$text,"
";
}
//生成目标文件的文件名
else{
$filename=explode(".",$_FILES['file']['name']);
do
{
$filename[0]=random(10); //设置随机数长度
$name=implode(".",$filename);
//$name1=$name.".Mcncc";
$uploadfile=$uploaddir.$name;
} while(file_exists($uploadfile)); if (move_uploaded_file($_FILES['file']['tmp_name'],$uploadfile))
{
if(is_uploaded_file($_FILES['file']['tmp_name']))
{ echo "上传失败!";
}
else
{//输出图片预览
echo "您的文件已经上传完毕 上传图片预览:
";
echo "
继续上传";
}
} }
?>