x-fran/g-trends

google-trends.php

<?php
require __DIR__ . '/vendor/autoload.php';

use Google\GTrends;

# This options are by default if none provided
$options = [
        'hl'  => 'en-US',
        'tz'  => -60, # last hour
        'geo' => 'IE',
    ];
$gt = new GTrends($options);

$keyword = 'Dublin';

$response = $gt->interestOverTime($keyword, 0, 'today 12-m');

$js_data = '';

foreach( $response as $datapoint ) {
	$js_data .= '[new Date("' . $datapoint[formattedAxisTime] . '"), ' .  $datapoint[value][0] . '], ';
}
?>

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>
<p>Source: Google Trends</p>

<?php
echo '<pre>';
print_r($response); # one year
echo '</pre>';
?>

<script>
google.charts.load('current', {packages: ['corechart', 'line']});
google.charts.setOnLoadCallback(drawBasic);

function drawBasic() {

  var data = new google.visualization.DataTable();
  data.addColumn('date', 'X');
  data.addColumn('number', '<?php echo $keyword; ?>');

  data.addRows([
  	<?php echo $js_data; ?>
  ]);

  var options = {
    hAxis: {
      title: 'Time'
    },
    vAxis: {
      title: 'Popularity'
    }
  };

  var chart = new google.visualization.LineChart(document.getElementById('chart_div'));

  chart.draw(data, options);
}
</script>