public static function sort($user_info_arr, $spec_info_origin_arr)
{
//when search result is empty, then spec array is NULL and instanceKeys is 0 => NULL
if ($spec_info_origin_arr == NULL) {
$isK_null = array("0" => "NULL");
return array($spec_info_origin_arr, $isK_null);
}
//get origin spec id for the case when don't use predict interface
foreach ($spec_info_origin_arr as $k => $v) {
$sid[$k] = $spec_info_origin_arr[$k]['spec_id'];
}
$re = NULL;
$s = NULL;
//get a recommender, 如果接口失效，注释掉
$re = new Recommender('sina-miaoche');
//implement a statistics request, 如果接口失效，注释掉
$s = new Statistics('sina-miaoche');
//如果接口失效
if ($re == NULL || $s == NULL) {
$instKeys = array_fill(0, count($spec_info_origin_arr), 'NULL');
for ($i = 0; $i < count($sid); $i++) {
$indexchanged_instKeys[$sid[$i]] = $instKeys[$i];
}
return array($sid, $indexchanged_instKeys);
}
$request = Yaf_Dispatcher::getInstance()->getRequest();
$params = $request->getQuery() + $request->getPost() + $request->getParams();
ksort($params);
foreach ($params as $k => $v) {
if ($v === '') {
unset($params[$k]);
continue;
}
$params[$k] = trim($v);
}
$sort_url = isset($params["sort"]) ? $params["sort"] : "NULL";
$asc_url = isset($params["asc"]) ? $params["asc"] : "NULL";
if ($sort_url == "NULL" && $asc_url == "NULL") {
$sortRule = "price+1";
} else {
if ($sort_url == "price") {
if ($asc_url == "NULL") {
$asc_url = "1";
}
$sortRule = $sort_url . "+" . $asc_url;
} else {
if ($sort_url != "price") {
if ($asc_url == "NULL") {
$asc_url = "1";
}
$sortRule = $sort_url . "+" . $asc_url;
} else {
$sortRule = $sort_url . "+" . $asc_url;
}
}
}
$p_url = isset($params["p"]) ? $params["p"] : "1";
$featuresForPredict = array("min_price", "weight", "brand_id", "series_id", "spec_id", "deal_record", "discount", "msrp", "name");
$da = array();
$specid_arr = array();
//save spec id used as index when sort
$sorted_auto_array = array();
//save spec information after sort
$sorted_auto_id = array();
//save spec id after sort
$spec_info_arr = $spec_info_origin_arr;
$instanceKeys = $re->getInstanceKeys(count($spec_info_arr));
//change the index of instanceKeys for case not use predict interface and return sid
$indexchanged_instanceKeys = array();
for ($i = 0; $i < count($sid); $i++) {
$indexchanged_instanceKeys[$sid[$i]] = $instanceKeys[$i];
}
//add items
foreach ($spec_info_arr as $k => $v) {
// construct a recommend feature object
$ri = new RecommendFeature();
$chajia = $spec_info_arr[$k]['msrp'] - $spec_info_arr[$k]['min_price'];
$ri->addFeature("price_difference", (string) $chajia);
$ri->addFeature("rank", "0");
$ri->addFeature("page", (string) $p_url);
$ri->addFeature("brand_name", (string) $spec_info_arr[$k]['brand_name']['name']);
$ri->addFeature("series_name", (string) $spec_info_arr[$k]['series_name']['name']);
//add features to a spec instance //and add customInformation
foreach ($v as $kk => $vv) {
if (in_array($kk, $featuresForPredict)) {
$ri->addFeature((string) $kk, (string) $vv);
//add feature
}
}
//add an instance with defined features into recommender
array_push($specid_arr, $spec_info_arr[$k]['spec_id']);
$re->addInstance((string) $instanceKeys[$k], $ri);
}
//construct request features
//add user
$ri = new RecommendFeature();
foreach ($user_info_arr as $k => $v) {
if ($k == 'ip') {
$ip_4 = explode('.', $v);
$ip_3 = $ip_4[0] . '.' . $ip_4[1] . '.' . $ip_4[2];
$ri->addFeature((string) $k, (string) $ip_3);
} else {
if ($k == 'ua') {
$ua = self::getBrowser($v);
$ri->addFeature("Browser", (string) $ua['name']);
$ri->addFeature("BrowserVersion", (string) $ua['version']);
$ri->addFeature("platform", (string) $ua['platform']);
} else {
$ri->addFeature((string) $k, $v);
}
}
}
$ri->addFeature("sort_rule", $sortRule);
$ri->addFeature("flowType", "pc_000");
$re->setReqFeature($ri);
//assign action type to be predicted
$actionList = [0];
//predict the instances
$status = $re->predict($actionList);
if ($status->getErrorCode() == ServiceCallStatus::ERR_OK || $status->getErrorCode() == ServiceCallStatus::ERR_PARTIAL_ERROR) {
//fetch the result of each instance
for ($i = 0; $i < count($instanceKeys); $i++) {
// if status is ok
// fetch the result of 'instance_1'
// or throw exception if instanceKey not found
try {
$rr = $re->getResult($instanceKeys[$i]);
//get prediction of action type 0
$rp = $rr->getPrediction(0);
$status = $rp[0];
$value = $rp[1];
//save spec id as key, prediction result as value
$array_save[$specid_arr[$i]] = $value;
$array_instanceKeys_tosort[$specid_arr[$i]] = $instanceKeys[$i];
$array_spec_info[$specid_arr[$i]] = $spec_info_arr[$i];
} catch (Exception $e) {
return array($sid, $indexchanged_instanceKeys);
//如果失败，返回原spec_id
}
}
} else {
return array($sid, $indexchanged_instanceKeys);
//如果失败，返回原spec_id
}
//stable sort
$temp = array();
$i = 0;
foreach ($array_save as $key => $value) {
$temp[] = array($i, $key, $value);
$i++;
}
uasort($temp, function ($a, $b) {
return $a[2] == $b[2] ? $a[0] > $b[0] : ($a[2] < $b[2] ? 1 : -1);
});
$array_save = array();
foreach ($temp as $val) {
$array_save[$val[1]] = $val[2];
}
//get the spec id after sorted.
$sorted_auto_id = array_keys($array_save);
//get the instanceKeys after sorted.
$sorted_instanceKeys = array();
$sorted_spec_info_arr = array();
foreach ($sorted_auto_id as $k => $v) {
$sorted_instanceKeys[$v] = $array_instanceKeys_tosort[$v];
$sorted_spec_info_arr[$k] = $array_spec_info[$v];
}
//show
foreach ($sorted_spec_info_arr as $k => $v) {
// construct a display info object
$d = new DisplayInfo();
//set instanceKey
$d->setInstanceKey((string) $sorted_instanceKeys[$sorted_spec_info_arr[$k]['spec_id']]);
$d->addCustomInfo("rank", (string) $k);
// make statistics display request
array_push($da, $d);
}
$s->statDisplay($da);
//return specid
return array($sorted_auto_id, $sorted_instanceKeys);
}
