Alma get live holdings availability for vufind

Alma.php

<?php
protected function curlMultiRequest($urls) {
    $ch = array();
    $results = array();
    $mh = curl_multi_init();
    foreach($urls as $key => $val) {
        $ch[$key] = curl_init();
        curl_setopt($ch[$key],CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch[$key], CURLOPT_URL, $val);
        //curl_setopt ($ch[$key], CURLOPT_FAILONERROR,1);
        // follow line enables https
        curl_setopt($ch[$key], CURLOPT_SSL_VERIFYPEER, false);
        curl_multi_add_handle($mh, $ch[$key]);
    }
    $running = null;
    do {
        $status = curl_multi_exec($mh, $running);
        $info = curl_multi_info_read($mh);
                if ( $info['result'] != 0 ) {
                    //print_r($info);
                }
    }
    while ($running > 0);
    // Get content and remove handles.
    foreach ($ch as $key => $val) {
        $results[$key] = curl_multi_getcontent($val);
        curl_multi_remove_handle($mh, $val);
    }
    curl_multi_close($mh);
    return $results;
}
 //////////////////////////
  public function getHolding($id) {
        $mmsid = $id;
        $apikey = urlencode('xxxxxxxxxxxxxx');
        $baseurl = 'https://api-na.hosted.exlibrisgroup.com/almaws/v1/bibs/';
        $count=0;
        $holdinglist = array(); // for holding the holdings
        $items = array(); // what we will return
        $urllist = array();
        // prepare loans url
        $paramurl = '?apikey=' . $apikey;
        $urllist['loans'] = $baseurl . urlencode($mmsid) . '/loans' . $paramurl;
        // prepare holdings url
        $suffixurl = '/holdings?apikey=' . $apikey;
        $urllist['holdings'] = $baseurl . urlencode($mmsid) . $suffixurl;
        // get loans and holdings from api
        // returns an array, keys are loans/holdings.
        // values are the xml responses
        $results2 = $this->curlMultiRequest($urllist);
        $loaninfo = array();
        // loans xml
        $record = new SimpleXMLElement($results2["loans"]);
        // process loans xml creating array with barcode as key
        $loans = array();
        // if no loans there will be no item_loan
        if ($record) {
                foreach ($record->item_loan as $itemloan) {
                        $duedate = $itemloan->due_date;
                        $barcode = $itemloan->item_barcode;
                        $loans["$barcode"] = $duedate;
                }
        }
        // now get each holdings id number
        $record = new SimpleXMLElement($results2["holdings"]);
        $holdinglist = array();
        $datafields = $record->xpath('/holdings/holding/holding_id');
        foreach ($datafields as $hid) {
                $holdinglist[] = $hid;
        }
        // for each holdings, prepare urls
        // GET /almaws/v1/bibs/{mms_id}/holdings/{holding_id}/items
        $urllist = array();
        $paramurl = '/items?apikey=' . $apikey . '&limit=90';
        foreach ($holdinglist as $hid) {
                $holdingsurl = '/holdings/' . urlencode($hid);
                $urllist["$hid"] = $baseurl . urlencode($mmsid) . $holdingsurl . $paramurl;
        }
           // call each of the holdings urls at the same time
        $results3 = $this->curlMultiRequest($urllist);
        // for each holding id, get its items
        $items = array();
        foreach ($holdinglist as $hid) {
                //create xml object based on this holdings xml
                $record = new SimpleXMLElement($results3["$hid"]);
                $datafields = $record->xpath('/items/item');
                // for each item within this holding
                foreach ($datafields as $item) {
                        $duedate = "";
                        $barcode = (string) $item->item_data->barcode;
                        $items["$count"] = array();
                        $items["$count"]["id"] = $mmsid;
                        $items["$count"]["barcode"] = $barcode;
                        $items["$count"]["number"] = $count;
                        $items["$count"]["item_id"] = $barcode;
                        $items["$count"]["availability"] = (string) $item->item_data->base_status;
                        if ($items["$count"]["availability"]) {
                                $items["$count"]["status"] = "Available";
                        } else {
                                $items["$count"]["status"] = "Not Available";
                        }
                        $items["$count"]["location"] = $item->item_data->library['desc'] . " - " . (string) $item->item_data->location['desc'];
                        $items["$count"]["callnumber"] = (string) $item->holding_data->call_number;
                        $items["$count"]["reserve"] = "0";
                        if (isset($loans["$barcode"])) {
                                $duedate = (string) $loans["$barcode"];
                        }
                        if ($duedate) {
                                // ISO 8601
                                $items["$count"]["duedate"] = date('l jS F Y', strtotime($duedate));
                        }
                        $count++;
                }
        }
        return $items;
}
?>