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Installation of the PHP extension

Yothalot can be used with a PHP API. This PHP API enables you to run PHP scripts with mapreduce jobs on the Yothalot cluster. The API also makes it easy to start up these jobs from within PHP. Before you can use the PHP API you need to install PHP and the Yothalot-PHP extension besides Yothalot. This page discusses how to install these. If you want to install Yothalot you are referred to our Installation page.

Installation of PHP5

In order to use the Yothalot PHP API you need to have PHP5 installed on all the nodes in your Yothalot cluster and on the machine that you use to start the job from. The easiest way to install PHP5 is to install it via the repository of your Linux distribution. Note that only PHP5 is supported and that you have to use the Zend engine. Currently we do not support HHVM.

Installation of the Yothalot-PHP extension

The Yothalot-PHP extension is an open source project that is hosted on GitHub. The project depends on two other open source projects of ours. Firstly, it depends on our PHP-CPP library, which is a C++ library that can be used to build PHP extensions. This allowed us to build the extension in C++. Secondly, the extension depends on AMQP-CPP, a C++ library for communicating with a RabbitMQ message broker. Since Yothalot uses RabbitMQ for its communication, the PHP extension needs to have access to RabbitMQ as well. This library is perfectly suited for this.

Because Yothalot-PHP depends on the PHP-CPP and AMQP-CPP libraries, these libraries need to be installed before Yothalot-PHP can be installed. Let us start by downloading and installing the PHP-CPP library.

The easiest way to download PHP-CPP is by using Git. If Git is not installed on your system we advise you to install it since you can also use it for downloading the other projects. You can use the repository of your Linux distribution to install Git. If Git is installed you can create a directory, move to this directory and type in:

git clone https://github.com/CopernicaMarketingSoftware/PHP-CPP

This command will download the current version of PHP-CPP in the directory PHP-CPP in the directory you are located in. After you have downloaded PHP-CPP you can go the the PHP-CPP directory and create the library from the source. You can do this by typing in:

make

(note that you should do this in the PHP-CPP directory). After you have build the library form the source, you can install it by typing in:

sudo make install

This will install the PHP-CPP library on the system. Since the library will be installed in some system directories you need to have super user privileges for this command.

After you have installed the PHP-CPP library you can install the AMQP-CPP library. The installation of the AMQP-CPP library is similar to the installation of the PHP-CPP library. You can download the source by typing in:

git clone https://github.com/CopernicaMarketingSoftware/AMQP-CPP

Now if you move to the AMQP-CPP directory you can install the AMQP-CPP library by typing in:

make
sudo make install

Just like above these commands will create the library from the downloaded source and install it on the system.

Finally, you can download and install the Yothalot-PHP library. The commands for doing this are:

git clone https://github.com/CopernicaMarketingSoftware/Yothalot-PHP
cd Yothalot-PHP
make
sudo make install

When you have installed the Yothalot-PHP library on all the nodes on your cluster and on the system you want to use to start up your jobs, you can use the PHP API.