title: PHP form input value doesn't work
body: <p>I like to have a standard value filled in the input field.<br/>
  I have this code:<br/></p>
  
  <pre><code>$stma = $conn-&gt;prepare("SELECT * FROM `users` WHERE ID = '".$_GET['gebruiker']."' ");
  $stma-&gt;execute();
  $row_count = $stma-&gt;rowCount(); // returns 1
  foreach ($conn-&gt;query($stma) as $rows) {
      $Username = $rows['Username'];
  }
  
  /// my form
  echo '&lt;form method="POST" &gt;
      &lt;table&gt;
      &lt;th colspan="3"&gt;&lt;h1&gt;Gebruiker bewerken&lt;/h1&gt;&lt;/th&gt;
          &lt;tr&gt;
              &lt;th&gt;
                  &lt;h3&gt;Gebruikersnaam: &lt;/h3&gt;
              &lt;/th&gt;
              &lt;td&gt;
                  &lt;input style="width: 70%;" type="text" READONLY value="'.$Username.'" &gt; 
                  // the value must be filled in this input field
              &lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;th&gt;
                  &lt;h3&gt;Wachtwoord: &lt;/h3&gt;
              &lt;/th&gt;
              &lt;td&gt;
                  &lt;input style="width: 70%;" type="password"  name="wachtwoord" REQUIRED&gt;
              &lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;th&gt;
              &lt;/th&gt;
              &lt;td colspan="2"&gt;
                  &lt;input type="submit" name="bewerken" class="button" style="vertical-align:middle" value="Opslaan"&gt;
              &lt;/td&gt;
          &lt;/tr&gt;
          '.$error.'
      &lt;/table&gt;
  &lt;/form&gt;';
  </code></pre>
  
  <p>The code doesn't fill in the value i got from the database.<br/>
  I still get an empty form field.<br/>
  My query returns 1 result row (i checked)<br/>
  Does someone see my mistake?<br/>
  I don't see the mistake i've made (it must me my mistake, it worked for me on other forms too)<br/></p>