PHP Conditional Help

Hoping to get some help adding a condition to this loop

The current code works, but there is an assumption that the data I am trying to collect is under [0]

, however after some testing I found that this is not the case and I need to check all the elements [0], [1], [2]

.. difficult to explain this please refer to the image below for step by step refinement.

$count = count($cert['tbsCertificate']['extensions'][0]['extnValue']);
for($i = 0; $i < $count; $i++) {
     if(array_key_exists('dNSName', $cert['tbsCertificate']['extensions'][0]['extnValue'][$i])) {
        $value = $cert['tbsCertificate']['extensions'][0]['extnValue'][$i]['dNSName'];
        $item = $i;
        echo 'DNSName',$item,'   : ', $value,"\n";
    }
}

      

        
        
        
      

    

Here's a visual representation of what to do.

PS I'm not a php expert, so I need your help to write the code.

• UPDATE (SEMI WORKING CODE) -

    $extensions = count($cert['tbsCertificate']['extensions']);
    for($j = 0; $j < $extensions; $j++) 
    {
    $count = count($cert['tbsCertificate']['extensions'][$j]['extnValue']);
    for($i = 0; $i < $count; $i++) {
         if(array_key_exists('dNSName', $cert['tbsCertificate']['extensions'][$j]['extnValue'][$i])) {
            $value = $cert['tbsCertificate']['extensions'][$j]['extnValue'][$i]['dNSName'];
            $item = $i;
            echo 'DNSName',$item,'   : ', $value,"\n";
        }
    }
 }

      

        
        
        
      

    

- CERTIFICATE -

-----BEGIN CERTIFICATE-----
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MQswCQYDVQQGEwJVUzEdMBsGA1UEChMUU3ltYW50ZWMgQ29ycG9yYXRpb24xHzAd
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o8s3Lti08voNZlbPGl/C2Ko0oRoQ67m/aUGkLehHfionykCTpSIHL965TW+Y4g==
-----END CERTIFICATE-----

      

        
        
        
      

    

- UPDATE 2 (Current Output) -