battlenetscrape.php

<?php

//Get Data from BattleNet
class exampleClass{
	public $wholeAH = array();
	
	function getWholeAH() {
		$key = 'zs54fyqy2mycxjd2pv9rmev2db6x8k59';
		$server = 'malganis';
		$fetch_url = "https://us.api.battle.net/wow/auction/data/{$server}?locale=en_US&apikey={$key}";

		//Create JSON object and parse it into a php associated array if possible
		$responseJson	= file_get_contents($fetch_url);
		$responseObj	= json_decode($responseJson);
		$db_url = $responseObj->files[0]->url;
		
		printf("Connected To: %s\n", $db_url);
		return $db_url;
	}
	
	function parseAH($itemID){
		$responseJson	= file_get_contents($wholeAH);
		$responseObj	= json_decode($responseJson);
		$auctions		= $responseObj->auctions;
		$filteredAuctions = array();
		
		foreach ($auctions as $auction){
			if ($auction->item == $itemID) {
				array_push($filteredAuctions,$auction);
			}
		}
		return $filteredAuctions;
	}

	function calcStats($itemID){
		$filteredAuctions = exampleClass::parseAH($itemID);
		$allPrices = array();
		$marketVolume = 0;
		
		foreach ($filteredAuctions as $auction){
			$marketVolume += $auction->quantity;
			$price = $auction->buyout / $auction->quantity / 10000;
			array_push($allPrices,$price);
		}
		
		$allPrices	= exampleClass::removeOutliers($allPrices);
		$meanPrice		= array_sum($allPrices) / count($allPrices);
		$stdDev			= stats_standard_deviation($allPrices);
		$minPrice		= min($allPrices);
		
		printf("\n");
		printf("OUTLIERS REMOVED:\n");
		printf("\nMinimum Price: %.2f\nMean Price: %.2f\nStandard Deviation: %.2f\n", $minPrice, $meanPrice, $stdDev);
	}

	function removeOutliers($unfiltered){
		$stdDev			= stats_standard_deviation($unfiltered);
		$meanPrice		= array_sum($unfiltered) / count($unfiltered);
		$filtered		= array();
		foreach ($unfiltered as $price){
			if ($price < $meanPrice + $stdDev*2){
				array_push($filtered, $price);
			}
		}
		return $filtered;
	}
}
$A = new exampleClass();
$A::calcStats(124125);