html - How can I upload an image in php without saving it -

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

how can uploaded file without saving , how can display it?

use $_files['image'] retrive image.

<?php session_start();  if(isset($_files['image'])){     $file_tmp_name =$_files['image']['tmp_name'];     $str = file_get_contents($file_tmp_name);     $b64img=base64_encode($str);      $_session['image'] = $b64img; // holds image string in session without saving it.  }