在php中处理上传的图片，并将地址保存到mysql中

if(isset($_FILES["pro_image"])){
$ret = array();
$uploadDir = 'pro_images' . '/' . $pro_id . '/';
$dir = dirname(_FILE_) . '/' . $uploadDir;
file_exists($dir) || ( mkdir($dir,0777,true) && chmod($dir,0777) );
if(!is_array($_FILES["pro_image"]["name"])){
$fileName = time().uniqid(). '.' .pathinfo($_FILES["pro_image"]["name"])['extension'];
move_uploaded_file($_FILES["pro_image"]["tmp_name"],$dir.$fileName);
$url = $uploadDir.$fileName;
}
}
$insert_sql = "insert into commo(id,name,price,addtime,image,number)
values('$pro_id','$pro_name','$pro_price','$addtime','$url','$pro_number')";
$insert_result = $mysqli->query($insert_sql);