(PECL sam >= 0.1.0)
SAMConnection->subscribe — Create a subscription to a specified topic.
The "subscribe" method is used to create a new subscription to a specified topic.
The identity of the topic (topic://topicname) to subscribe to.
A subscription identifier that can be used in a subsequent receive call as a selector to obtain any topic data or FALSE if an error occurred. The subscription identifier should be used in the receive call in place of the simple topic name.
Example #1 Subscribe to a topic
<?php
$subid = $conn->subscribe('topic://A');
if (!$subid) {
// The subscribe failed!
echo "Subscribe failed ($conn->errno) $conn->error";
}
?>