title: How to update a current row on Parse.com using php
body: <p>I want to update single row base on id, i have questions table and there is column question_id, which has unique date for each row.
  Now i want to update that row column based on that question_id.
  I have code written below, but not getting success. It created New Record not update old record. I want to update old record.
  I have tried both ParseObject and ParseQuery but not getting success.</p>
  
  <pre><code>      $query = new ParseObject("question");
        $query-&gt;equalTo("question_id", "2");
        $query-&gt;set("correct_percentage", "55.5");
        $query-&gt;save();
  </code></pre>