title: If input file is empty select a default file
body: <p>I want to select a default if my users don't select a file.</p>
  
  <p>I checked if the file input is empty. and I don't know the next steps.
   here is my code.</p>
  
  <p><strong>PHP</strong>:</p>
  
  <pre><code>if ($_FILES['ilyes']['size'] == 0)
  {
      // select the default file(name="blanc.jpeg" and the path="../blanc.jpeg")
  }
  </code></pre>
  
  <p><strong>HTML</strong>:</p>
  
  <pre><code>&lt;input type="file" name="ilyes"&gt;
  </code></pre>