unable to get last value of JSON array in PHP

Question

here is the JSON file in question. I need to get the last y value from the values array. This updates once a day so the code below is what I've tried, but won't update to the latest value:

<?php
$url = 'https://api.blockchain.info/charts/avg-block-size?format=json';
$data = file_get_contents($url);
$stats = json_decode($data, true);

$blocksize = $stats['values']['363']['y'];

echo $blocksize;
?>

thoughts?

John Ellmore · Accepted Answer · 2017-11-10 02:40:44Z

4

Try using:

$lastValue = end($stats['values']);
$blocksize = $lastValue['y'];

answered Nov 10, 2017 at 2:40

John Ellmore

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1 Comment

Raptor Over a year ago

This could be improved by checking whether the $stats['values'] exists or not first.

Kartik Prasad · Accepted Answer · 2017-11-10 02:41:01Z

1

You can count the array size and -1 from it

$blocksize = $stats['values'][count($stats['values']) - 1]['y'];

answered Nov 10, 2017 at 2:41

Kartik Prasad

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1 Comment

Mark.S Over a year ago

I was using the "count" completely wrong just now then refreshed the page. thanks!

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