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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL sam >= 0.1.0)
SAMConnection::peek — Read a message from a queue without removing it from the queue.
$target
[, array $properties
] )
target
The identity of the queue from which to peek the message.
properties
An optional associative array of properties describing other parameters to control the peek operation.
Property name | Possible values |
---|---|
SAM_CORRELID | This is the target correlation id string of the message. This would typically have been returned by a "send" request. |
SAM_MESSAGEID | This is the message id string of the message which is to be peeked. |
This method returns a SAMMessage object or FALSE
if an error occurs.
Example #1 Retrieve the next message from a queue without removing it
<?php
$msg = $conn -> peek ( 'queue://receive/test' );
if (! $msg ) {
// The peek failed!
echo "Peek failed ( $conn -> errno ) $conn -> error " ;
}
?>
Example #2 Retrieve a specific message from a queue without removing it from the queue
<?php
$msg = $conn -> peek ( 'queue://receive/test' , array( SAM_MESSAGEID => $messageId ));
?>