<?php
// Replace with a valid subscription key from your Azure account.
$accessKey = 'enter key here';
$endpoint = 'https://api.cognitive.microsoft.com/bing/v7.0/search';
$term = 'Microsoft Cognitive Services';

function BingWebSearch ($url, $key, $query) {
   /*
    * Prepare the HTTP request.
    * NOTE: Use the key 'http' even if you are making an HTTPS request.
    * See: http://php.net/manual/en/function.stream-context-create.php.
    */
    $headers = "Ocp-Apim-Subscription-Key: $key\r\n";
    $options = array ('http' => array (
                          'header' => $headers,
                           'method' => 'GET'));

    // Perform the request and receive a response.
    $context = stream_context_create($options);
    $result = file_get_contents($url . "?q=" . urlencode($query), false, $context);

    // Extract Bing HTTP headers.
    $headers = array();
    foreach ($http_response_header as $k => $v) {
        $h = explode(":", $v, 2);
        if (isset($h[1]))
            if (preg_match("/^BingAPIs-/", $h[0]) || preg_match("/^X-MSEdge-/", $h[0]))
                $headers[trim($h[0])] = trim($h[1]);
    }

    return array($headers, $result);
}
// Validate the subscription key.
if (strlen($accessKey) == 32) {

    print "Searching the Web for: " . $term . "\n";
    // Makes the request.
    list($headers, $json) = BingWebSearch($endpoint, $accessKey, $term);

    print "\nRelevant Headers:\n\n";
    foreach ($headers as $k => $v) {
        print $k . ": " . $v . "\n";
    }
    // Prints JSON encoded response.
    print "\nJSON Response:\n\n";
    echo json_encode(json_decode($json), JSON_PRETTY_PRINT);

} else {

    print("Invalid Bing Search API subscription key!\n");
    print("Please paste yours into the source code.\n");

}
?>
