For reference, PECL AMQP Extension and http://php.net/manual/fa/book.amqp.php are the same thing, one is the package, the other the documentation for the package.
As a maintainer of the official PHP AMQP extension, I am a little biased. Many people use this extension in high volume low latency production environments since it is far faster than one written in native PHP. Furthermore, since I constantly use this at my job, I have to keep it working and up to date.
The drawback to this extension is that it is not available for Windows, yet, because the library on which it depends is currently being ported. There is not ETA for Windows support, but as soon as the dependencies support Windows, it is our goal to port the extension over to Windows as well.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…