Count and print values of HTTP API - php

Question

Looking for help in counting all values that are present in HTTP API. The link below outputs the values of multiple data points by date. What I am trying to achieve is a count on each value so that instead of
a:2:{s:10:"2018-01-03";a:9:{s:12:"nb_pageviews";d:2031;}s:10:"2018-01-04";a:9:{s:12:"nb_pageviews";d:25;}
I want to output the above nb_pageviews as a key with the value of the dates combined - 2056.
Example Link for API is https://demo.piwik.org/?module=API&method=Actions.get&idSite=7&period=day&date=last2&format=php&token_auth=anonymous
And the PHP to display this is
$url = "https://demo.piwik.org/";
$url .= "?module=API&method=Actions.get";
$url .= "&idSite=7&period=day&date=last2";
$url .= "&format=php";
$url .= "&token_auth=anonymous";
$fetched = file_get_contents($url);
$content = unserialize($fetched);
// case error
if (!$content) {
print("NO DATA");
}
foreach ($content as $row) {
$pageviews = $row['nb_pageviews'];
print("<div>$pageviews</div>\n");
}
Please note that the above link contains multiple other values that I will be wanting to do the same with, yet for ensuring the readability of this question I have kept the values simple and to just the one.

Answer 1

Just use the combined assignment operator, and be sure to set defaults of 0, before the loop.
$fetched = 'a:2:{s:10:"2018-01-03";a:9:{s:12:"nb_pageviews";d:2031;s:17:"nb_uniq_pageviews";d:964;s:12:"nb_downloads";d:2;s:17:"nb_uniq_downloads";d:2;s:11:"nb_outlinks";d:68;s:16:"nb_uniq_outlinks";d:64;s:11:"nb_searches";d:33;s:11:"nb_keywords";d:16;s:19:"avg_time_generation";d:0.78600000000000003;}s:10:"2018-01-04";a:9:{s:12:"nb_pageviews";d:25;s:17:"nb_uniq_pageviews";d:10;s:12:"nb_downloads";i:0;s:17:"nb_uniq_downloads";i:0;s:11:"nb_outlinks";d:1;s:16:"nb_uniq_outlinks";d:1;s:11:"nb_searches";d:2;s:11:"nb_keywords";d:2;s:19:"avg_time_generation";d:0.79300000000000004;}}';
$content = unserialize($fetched);
// case error
if (!$content) {
print("NO DATA");
}
$pageviews = 0;
$uniq_pageviews = 0;
// and on, with your other vars you're looking to sum...
foreach ($content as $row) {
$pageviews += $row['nb_pageviews'];
$uniq_pageviews += $row['nb_uniq_pageviews'];
}
var_export(['pageviews' => $pageviews, 'uniq_pageviews' => $uniq_pageviews]);
Working demo: https://eval.in/930183
// Output
array (
'pageviews' => 2056.0,
'uniq_pageviews' => 974.0,
)
To print these values, you might replace the var_export line with something like this:
$data = [
'pageviews' => $pageviews,
'uniq_pageviews' => $uniq_pageviews
];
Which you could output in some HTML like so:
<div class="col-md-4"><?php echo $data['pageviews']; ?></div>
<div class="col-md-4"><?php echo $data['uniq_pageviews']; ?></div>