Bol.com Open API example script for Dutch Open Hackathon

bol.php

<?php
 
//Requires: extension=php_openssl.dll in php.ini
// Based on bol.com REST API version 4.0
// No rights may be derived from this codesample
// Any questions? Check out the API documentation at http://developers.bol.com
 
// set apikey
$apiKey = '___your_apikey___';
$server = 'openapi.bol.com';
$port = '443';

// Set keyword
$keyword = 'bureaustoel';


function doRequest($method, $server, $port, $url, $parameters, $content, $sessionId) {
 
    $contentType = 'application/json';

    $headers = $method . " " . $url . $parameters . " HTTP/1.0\r\nContent-type: " . $contentType . "\r\n";
    $headers .= "Host: " . $server . "\r\n";
    $headers .= "Connection: close\r\n";
    $headers .= "\r\n";
 
    // Connect using fsockopen (you could also try CURL)
    $socket = fsockopen('ssl://' . $server, $port, $errno, $errstr, 30);
    if (!$socket) {
        echo "$errstr ($errno)<br />\n";
    }
    fputs($socket, $headers);
    fputs($socket, $content);
    $ret = "";
 
    while (!feof($socket)) {
        $readLine = fgets($socket);
        $ret .= $readLine;
    }
    fclose($socket);
    return $ret;
}
 
// Build the request to the API
$output = doRequest('GET', $server, $port, '/catalog/v4/search', '?q=' . urlencode($keyword) . '&apikey=' . $apiKey . '&offset=0&nrProducts=8includeattributes=true&dataoutput=categories,refinements,products&ids=0', '', null);
 
// Check for the right http status in the API respons
if (substr_count($output, "200 OK") > 0) {
    // Strip unneeded stuff from the json respons
    list($header, $body) = explode("\r\n\r\n", $output, 2);
    // decode the json sting
    $phpobject = json_decode($body);
 
    // Get the products
    $price_arr = array();
    foreach ($phpobject->products as $item) {
        // The first offer is always a bol.com offer (unless this product is only sold by 2ndhand or plaza partners
        $price = doubleval($item->offerData->offers[0]->price);
        $price_arr[] = $price;
    }
    $price_sum = array_sum($price_arr);
    $price_count = count($price_arr);
    $avg_price = ( $price_sum / count($price_arr) );
    echo "Average price is $avg_price\n";
    die;
    // End of statuscode 200
}
die('no 200 OK');
?>