77 lines
2.1 KiB
PHP
77 lines
2.1 KiB
PHP
<?php
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ini_set('display_errors', '1');
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ini_set('display_startup_errors', '1');
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error_reporting(E_ALL);
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include './assets/functions.php';
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include './settings/settings.php';
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include './settings/config.php';
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//Connect to DB
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$pdo = dbConnect($dbname);
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$sql = 'SELECT description FROM history where type="Maintenance_Test" and description like "%doubletestvalues%"';
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$stmt = $pdo->prepare($sql);
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$stmt->execute();
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$messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
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//total measurement internal array
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$total_measurement = [];
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foreach ($messages as $message){
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//Cleanup input array
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$message = json_decode($message['description'],true);
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$message = $message["doubletestvalues"];
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foreach ($message as $measure){
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//Filter out correct measurements
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if ($measure['pass'] === true){
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$total_measurement[$measure['name']][] = $measure['measure'];
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}
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}
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}
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//result array
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$total_results = [];
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//print "<pre>";
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//print_r($total_measurement);
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//print "</pre>";
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foreach ($total_measurement as $key => $value){
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$total_results[$key]['average'] = average($value);
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$total_results[$key]['median'] = calculateMedian($value);
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$total_results[$key]['stdev'] = standDeviation($value);
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}
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print "<pre>";
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print_r($total_results);
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print "</pre>";
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function standDeviation($arr)
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{
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$num_of_elements = count($arr);
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$variance = 0.0;
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// Calculate mean using array_sum() method
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$average = array_sum($arr) / $num_of_elements;
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foreach($arr as $i)
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{
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// Sum of squares of differences between all numbers and means.
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$variance += pow(($i - $average), 2);
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}
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return (float)sqrt($variance / $num_of_elements);
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}
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function average($arr)
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{
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$num_of_elements = count($arr);
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$average = array_sum($arr) / $num_of_elements;
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return $average;
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}
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function calculateMedian($array) {
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if (empty($array)) {
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return null;
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} else {
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sort($array);
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$lowMiddle = $array[floor((count($array) - 1) / 2)];
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$highMiddle = $array[ceil((count($array) - 1) / 2)];
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return ($lowMiddle + $highMiddle) / 2;
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}
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}
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?>
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