A short PHP script to notify me via PushBullet when the Nexus 6 64GB White becomes available for sale on the UK Google Play store

nexus_check.php

#!/usr/bin/php
<?php
$url = "https://play.google.com/store/devices/details/Nexus_6_64_GB_Cloud_White?id=nexus_6_white_64gb";
//$url = "https://play.google.com/store/devices/details/Nexus_6_64_GB_Midnight_Blue?id=nexus_6_blue_64gb";
//$url = "https://play.google.com/store/devices/details/Nexus_6_32_GB_Midnight_Blue?id=nexus_6_blue_32gb";
$opts = array('http' =>
	array(
		'method'  => 'GET',
		'header' => array(
			"authority:play.google.com",
			"path:/store/devices/details/Nexus_6_64_GB_Cloud_White?id=nexus_6_white_64gb",
			"accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
			"accept-language:en-GB,en;q=0.8",
			"cache-control:max-age=0",
			"user-agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36",
		),
	)
);
$context = stream_context_create($opts);
$count = 0;
while (true) {
	$count++;
	$page = file_get_contents($url, false, $context);
	$dom = new DOMDocument;
	@$dom->loadHTML($page);
	$finder = new DOMXPath($dom);
	$className="details-actions";
	$nodes = $finder->query("//*[contains(@class, '$className')]");
	/** @var DOMElement $node */
	foreach ($nodes as $node) {
		//look for data-availability attribute inside this node
		/** @var DOMNodeList $childNodeList */
		$childNodeList = $finder->query("*[@data-availability]", $node);
		/** @var DOMElement $childNode */
		foreach ($childNodeList as $childNode) {
			if ($childNode->getAttribute('data-availability') == "AVAILABLE") {
				echo "now available";
				$data = array(
					"type" => "note",
					"title" => 'AVAILABLE!!! - Nexus 6 64GB White',
					"body" => 'AVAILABLE!!! - Nexus 6 64GB White' . "\r\n" . $url
				);
				$dataString = json_encode($data);
				$pushBulletToken = "<yourtokenhere>";
				$ch = curl_init('https://api.pushbullet.com/v2/pushes');
				curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
				curl_setopt($ch, CURLOPT_USERPWD, $pushBulletToken);
				curl_setopt($ch, CURLOPT_POSTFIELDS, $dataString);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
				curl_setopt($ch, CURLOPT_HTTPHEADER, array(
						'Content-Type: application/json',
						'Content-Length: ' . strlen($dataString))
				);
				$result = curl_exec($ch);
				var_dump($result);
				curl_close ($ch);
				exit;
			}
		}
	}
	if ($count % 60 == 0) {
		echo $count . " Not - available. Sleeping - " . time() . "\n";
	}
	sleep(5);
}