文件不会移动到PHP V7.2.13中的文件夹

I am trying to upload files. I am using xampp server. Everything is working perfect in localhost. Files are moving to specific folder. But in server file name is storing in database but not moving to folder. Please check my code

     <?php
   if(isset($_FILES['image'])){
   $errors= array();
   $file_name = $_FILES['image']['name'];
   $file_size =$_FILES['image']['size'];
   $file_tmp =$_FILES['image']['tmp_name'];
   $file_type=$_FILES['image']['type'];
   $file_ext=strtolower(end(explode('.',$_FILES['image']['name'])));

   $expensions= array("jpeg","jpg","png");

  if(in_array($file_ext,$expensions)=== false){
     $errors[]="extension not allowed, please choose a JPEG or PNG file.";
  }

  if($file_size > 2097152){
     $errors[]='File size must be excately 2 MB';
  }

  if(empty($errors)==true){
     move_uploaded_file($file_tmp,"images/".$file_name);
     echo "Success";
  }else{
     print_r($errors);
   }
   }
   ?>

  <form action="" method="POST" enctype="multipart/form-data">
     <input type="file" name="image" />
     <input type="submit"/>
  </form>

I gues the destination folder is not well defined. Try to make the path absolute to check waht really happens.

 move_uploaded_file($file_tmp, "/full/path/to/images/".$file_name);