README

Integrating PHP and R

Purpose

Sometimes there is a need to make complex calculations and analyze the data, but your application is written in PHP. As is known that PHP a badly programming language for statistics calculation and data manning. But R is a language and environment for statistical computing and graphics. So this library provide integration between R and PHP.

Installation

• Install Composer following the official Composer documentation

composer require okvpn/php-rdk

• Install R

sudo apt-get install r-base

Run command to confirms that R successfully installed.

R --version

Output:

R version 3.2.3 (2015-12-10) -- "Wooden Christmas-Tree"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under the terms of the
GNU General Public License versions 2 or 3.
For more information about these matters see
http://www.gnu.org/licenses/.

Example

Run R script

use Okvpn\R\Process\RProcess;
use Okvpn\R\UnixPipes;

$rPath = '/usr/bin/R'; //path to R
$process = new RProcess(new UnixPipes(), $rPath);
$process->start();

$rOutput = $process->write(<<<TXT
library("plot3D")
ii = which(Hypsometry\$x > -50 & Hypsometry\$x < -20)
jj = which(Hypsometry\$y > 10 & Hypsometry\$y < 40)
zlim = c(-10000, 0)
png('test.png')
persp3D(z = Hypsometry\$z[ii,jj], xlab = "longitude", bty = "bl2", ylab = "latitude", zlab = "depth", clab = "depth, m", expand = 0.5, d = 2, phi = 20, theta = 30, resfac = 2, contour = list(col = "grey", side = c("zmin", "z")), zlim = zlim, colkey = list(side = 1, length = 0.5))
dev.off()
TXT
);

print_r($rOutput->getAllOutput());

Output image /tmp/test.png:

Use expression builder

use Okvpn\R\Process\ProcessManager;
use Okvpn\R\Types\Type;

$rProcess = ProcessManager::create();
$exprBuilder = $rProcess->createExpressionBuilder();

$result = $exprBuilder
    ->select('t(combn(c(0:3), :b))', Type::MATRIX)
    ->setParameter('b', $b)
    ->execute()->getSingleResult();

License

MIT License. See LICENSE.