title: Yii2 Update many records with difference conditions
body: <p>I want update many records with yii2 for insert use <code>batchinsert()</code> method and for update I don't know!!!</p>
  
  <pre><code>update my_tbl set fld1 = 321321 where res = 46513,
                 fld1 = 89876 where res = 54646,  
                 fld1 = 64564 where res = 54654;
  </code></pre>