This article describes how to put a message in the Azure Service Bus Queue with PHP.

To put a message in the queue you need to create an SAS Token. This SAS Token is needed to authorize the Azure Service Bus.

<?php
// Create SAS token
function CreateSASToken()
{
    $namespace = "MyServiceBusNamespace"; // Change to your namespace. 
    $queuename = "TestMessageQueue"; // Change to your queue name. 
 
    $sharedAccessKeyName = "TestAccessKey";
    $sharedAccessKey = "Gdfi2lb4fqNdozFGTRUsvfqZSMCMzfh/2oj02CZ0LPE="; // Change!
 
    $expireInSeconds = 1000;
    $t0 = time(); // Returns the current time measured in the number of seconds since the Unix Epoch 
    $expire = $t0 + $expireInSeconds; 
    
    $sr = urlencode("https://$namespace.servicebus.windows.net/$queuename");
        
    $tohash = utf8_encode($sr . "\n"   . $expire); 
        
    $sig = base64_encode(
        hash_hmac('sha256', $tohash, $sharedAccessKey, true)
    );
    $sig = urlencode($sig);
        
    $se = $expire;
    $skn = $sharedAccessKeyName;
        
    $token = "SharedAccessSignature sr=$sr&sig=$sig&se=$se&skn=$skn";
    
    return $token; 
}
?>

Then you can put a message in the queue like this:

<?php
function PostToQueue($token, $message)
{
    $namespace = "MyServiceBusNamespace"; // Change to your namespace. 
    $queuename = "TestMessageQueue"; // Change to your queue name. 
    $serviceUrl = "https://$namespace.servicebus.windows.net/$queuename/messages";
      
    $messageLength = strlen($message);
   
    $header = "Content-type: application/atom+xml;\r\n".
              "Content-Length: $messageLength\r\n" . 
              "Authorization: $token\r\n";
   
    $options = array(
        'http' => array(
            'header'  => $header,
            'content' => $message,
            'method'  => 'POST'
        )
    );
   
    $context = stream_context_create($options);
    $result = file_get_contents($serviceUrl, false, $context); 
   
    // Do error handling!
      
    return $result;
}
?>