(No version information available, might only be in SVN)
AMQPEnvelope::isRedelivery — Whether this is a redelivery of the message
Whether this is a redelivery of a message. If this message has been delivered and AMQPEnvelope::nack() was called, the message will be put back on the queue to be redelivered, at which point the message will always return TRUE
when this method is called.
此函数没有参数。
TRUE
if this is a redelivery, FALSE
otherwise.