PHP Script for Traceroute Pingdom API

traceroute.php

<?php

$host = $_GET["host"];

if (empty($host)) {
    echo 'Please provide host';
} else {

  //create the url for API call
	$url = "https://api.pingdom.com/api/2.0/traceroute?host=".$host;

	//initialize
	$ch = curl_init();

	// 2. set the options, including the url
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_USERPWD, "EMAIL:PASSWORD");
	curl_setopt($ch, CURLOPT_HTTPHEADER, array("App-Key: YOUR-KEY-HERE"));
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HEADER, 0);

	//execute
	$output = curl_exec($ch);

	if ($output === FALSE) {
		echo "cURL Error: " . curl_error($ch);
	} else {
		$response = json_decode($output,true);

		$string = $response['traceroute']['result'];

		//pattern to find ip addresses from string
		$pattern = "/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/";

		//run regex and return matches in an array
		preg_match_all($pattern, $string, $ips); 

		//convert array to a comma seperated string of ip addresses
		echo implode(",", $ips[0]);

	}

	//free up the curl handle
	curl_close($ch);

}

?>