title: No data sources are configured to run this SQL [ phpstorm ]
body: <p>My code has no problem 
  But information is not sent to the database (phpstorm, mysql)</p>
  
  <p>Error text:   </p>
  
  <blockquote>
  <pre><code>{ No data sources are configured to run this SQL and provide advanced code assistance. Disable this inspection via problem menu }
  </code></pre>
  </blockquote>
  
  <pre><code>&lt;?php
  
  if(isset($_POST['btn'])) {
    $user_name = $_POST['user_lname'];
    $conn = mysqli_connect('localhost', 'root', '', 'php_test');
    $sql = "INSERT INTO user_tbl (lastname) VALUES ('$user_name')";
    mysqli_query($conn, $sql);
  }
  ?&gt;
  
  &lt;!doctype html&gt;
  &lt;html lang="en"&gt;
  &lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"&gt;
    &lt;meta http-equiv="X-UA-Compatible" content="ie=edge"&gt;
    &lt;title&gt;Document&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;form action="" method="post"&gt;
    &lt;label&gt;
      &lt;input type="text" name="user_lname"&gt;
    &lt;/label&gt;
    &lt;input type="submit" name="btn"&gt;&lt;/form&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>