1. Go to this page and download the library: Download sibilino/dygraphswidget 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/ */
$data = 'function () {
var data = [];
for (var i = 0; i < 1000; i++) {
var base = 10 * Math.sin(i / 90.0);
data.push([i, base, base + Math.sin(i / 2.0)]);
}
var highlight_start = 450;
var highlight_end = 500;
for (var i = highlight_start; i <= highlight_end; i++) {
data[i][2] += 5.0;
}
return data;
}';
$data = 'js:javascriptData';
$options = array(
'underlayCallback' => 'js:function(canvas, area, g)
{
var bottom_left = g.toDomCoords(highlight_start, -20);
var top_right = g.toDomCoords(highlight_end, +20);
var left = bottom_left[0];
var right = top_right[0];
canvas.fillStyle = "rgba(255, 255, 102, 1.0)";
canvas.fillRect(left, area.y, right - left, area.h);
}'
);