mirror of
https://github.com/seigler/neat-charts
synced 2025-07-27 01:16:09 +00:00
40 lines
1.5 KiB
PHP
40 lines
1.5 KiB
PHP
<?php
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// https://poloniex.com/public?command=returnChartData¤cyPair=BTC_XMR&start=1466740210&end=9999999999&period=300
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class Util {
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public static function getJson($url) {
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if (empty($url)) {
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trigger_error('Missing or empty JSON url');
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}
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
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curl_setopt($ch, CURLOPT_TIMEOUT, 3);
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# curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
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# curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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# curl_setopt($ch, CURLOPT_CAINFO, getcwd() . "/VeriSignClass3PublicPrimaryCertificationAuthority-G5.pem");
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$result = curl_exec($ch);
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// $result = file_get_contents('https://api.flickr.com/services/feeds/photos_public.gne?id=50219999@N00&tags=Sketches&lang=en-us&format=json&nojsoncallback=1');
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$result = json_decode($result) or trigger_error('Couldn\'t parse JSON');
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# foreach ($result->items as $item) { }
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return $result;
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}
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public static function median($arr) {
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sort($arr);
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$count = count($arr); //total numbers in array
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$middleval = floor(($count-1)/2); // find the middle value, or the lowest middle value
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if($count % 2) { // odd number, middle is the median
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$median = $arr[$middleval];
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} else { // even number, calculate avg of 2 medians
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$low = $arr[$middleval];
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$high = $arr[$middleval+1];
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$median = (($low+$high)/2);
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}
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return $median;
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}
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}
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