PHP conditional assistance

Question

Hoping to get some help with adding a condition to this loop

The current code is working but there is an assumption that the data i am trying to collect is under [0] however after some testing i found this is not the case and i need to check all items [0], [1], [2].. difficult to explain so please refer to the image below for step by step clarification.

$count = count($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 is a visual of what the condition needs to do.

P.S. i am not a php expert so i will 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-----
MIIHqjCCBpKgAwIBAgIQbY5du3wWeFH4otbLa18wRTANBgkqhkiG9w0BAQsFADB3
MQswCQYDVQQGEwJVUzEdMBsGA1UEChMUU3ltYW50ZWMgQ29ycG9yYXRpb24xHzAd
BgNVBAsTFlN5bWFudGVjIFRydXN0IE5ldHdvcmsxKDAmBgNVBAMTH1N5bWFudGVj
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-----END CERTIFICATE-----

-- UPDATE 2 (Current output) --

Answer 1

Surround that code by

$extensions = count($cert['tbsCertificate']['extensions']);
for($j = 0; $j < $extensions; $j++) 
{
   Existing code
}

And replace extensions[0] by extensions[j]