title: Ios image notification from firebase web api using php
body: <p>I am working on sending notification to ios. Notification without image is working perfectly but not with image. When i search the solution, they all say like set 'mutable-content' => true. yeah, but how? I may be so dumb enough not to understand what that actually means. the params I sent is this .. </p>
  
  <pre><code>$arr = ['type' =&gt; 'msg', 'data' =&gt; '', 'text' =&gt; 'Hello', 'image_url' =&gt; ''];
  $fields = array(
             'to' =&gt; '/topics/iostest',
             'notification' =&gt; $arr,
             'mutable-content'=&gt; 1,
             'priority' =&gt; 'high'
            );
  </code></pre>
  
  <p>Ios only read the 'notification' and receive like ..</p>
  
  <pre><code>'aps': {
     alert : 'Hello'
  }
  </code></pre>
  
  <p>not receiving 'mutable-content' ... 
  the people who work on both ios and php can solve this, i hope. please help. thanks.</p>