1. Go to this page and download the library: Download gregwar/gnuplot library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
gregwar / gnuplot example snippets
use Gregwar\GnuPlot\GnuPlot;
$plot = new GnuPlot;
// Setting the main graph title
$plot->setGraphTitle('Demo graph');
// Adding three points to the first curve
$plot
->setTitle(0, 'The first curve')
->push(0, 4)
->push(1, 5)
->push(2, 6)
;
// Adding three points on the other curve
// (with index 1)
$plot
->setTitle(1, 'The first curve')
->push(0, 8, 1)
->push(1, 9, 1)
->push(2, 10, 2)
;
// Write the graph to out.png
$plot->writePng('out.png');