title: How to add many WHERE constraints when updating a mysql table using php?
body: <p>How can I add multiple constraints after the WHERE part of the UPDATE MySQL table statement? Is this possible? I have tried separating the constraints using commas. Thank you. </p>
  
  <pre><code>    $update_error = mysqli_query($con, "UPDATE users SET error_level='3'
                      WHERE errors &lt;= '650', errors &gt; '200'");
  </code></pre>