File save

@Shakuntala When you click on run button the code you have written will be saved to server.
Is that you are looking for or anything else?

The question actually is not clear, and there're missing infos like the used backend-language. However, I assume, you have an HTML-Form and you want to accept multi files and save them locally for further usage. Here's a sample code does the job.

<?php
if (isset($_POST["submit"])) {

  $files = $_FILES['files'] ?? '';

  foreach ($files['name'] as $key => $value) {
    $name = $files['name'][$key];
    $tmp_name = $files['tmp_name'][$key];
    $size = $files['size'][$key];
    $error = $files['error'][$key];
    $type = $files['type'][$key];

    move_uploaded_file($tmp_name, "uploads/$name");
  }
}

?>
<form method="post" enctype="multipart/form-data">

  <div style="margin-bottom: 1rem;">
    <label for="files" style="display: block; margin-bottom: 1rem;">Choose file(s):</label>
    <input type="file" name="files[]" id="files" multiple>
  </div>

  <input type="submit" name="submit">
</form>

Create a uploads folder, which will store locally your uploaded files/images.
You may concern files validation before storing them on the server or locally.

Good luck :)