function calculations($desc, $asc)
{
$result = 0;
$iterations = 0;
do {
$iterations++;
$desc = join_number($desc);
$asc = join_number($asc);
$result = $desc - $asc;
$result_split = split_number($result);
$desc = sort_desc($result_split);
$asc = sort_asc($result_split);
} while ($result != 6174);
return $iterations;
}
/**
* 附近商家（未启用）
*/
public function around_merchant()
{
$longitude = $_POST['longitude'];
$latitude = $_POST['latitude'];
$classid = isset($_POST['cat_id']) ? htmlspecialchars($_POST['cat_id']) : '';
$sort = isset($_POST['sort']) ? htmlspecialchars($_POST['sort']) : '1';
$page = isset($_POST['page']) ? htmlspecialchars($_POST['page']) : '1';
$num = isset($_POST['num']) ? htmlspecialchars($_POST['num']) : '6';
// $km=isset($_POST['km'])?htmlspecialchars($_POST['km']):'3';
if (empty($longitude) || empty($latitude)) {
$this->jsonUtils->echo_json_msg(4, '经纬度参数为空...');
exit;
}
// $ll_arr=rangekm($km, $longitude,$latitude);//获取最大最小经纬度
// $maxLng=$ll_arr['maxLng'];
// $minLng=$ll_arr['minLng'];
// $maxLat=$ll_arr['maxLat'];
// $minLat=$ll_arr['minLat'];
$where = " 1=1 and is_salesman =0 ";
// $where .= "and b.longitude <$maxLng and b.longitude>$minLng and
// b.latitude <$maxLat and b.latitude>$minLat";
// $sql="select
// a.id,a.longitude,a.latitude,a.intro,a.pics,a.header,a.merchant_name
// ,a.pcat_id ,b.name as area_name from ". C('DB_PREFIX')."merchant as a
// left join ".C('DB_PREFIX')."city as b on a.area_id=b.id where
// a.collecter=0 and a.longitude <$maxLng and a.longitude>$minLng and
// a.latitude <$maxLat and a.latitude>$minLat ";
if (!empty($classid)) {
$sql = $where . " and a.pcat_id ={$classid} ";
$arr = $this->dao->table(C('DB_PREFIX') . "service as a")->join(C('DB_PREFIX') . 'merchant as b on a.merchant_id = b.id')->field('b.id,b.merchant_name,b.header,b.intro,b.tel,b.address,b.mobile,b.longitude,b.latitude,b.area_id')->where($where)->group('a.merchant_id')->page($page)->limit($num)->select();
} else {
$arr = $this->dao->table(C('DB_PREFIX') . "merchant as b")->field('b.id,b.merchant_name,b.header,b.intro,b.tel,b.address,b.mobile,b.longitude,b.latitude,b.area_id')->where($where)->page($page)->limit($num)->select();
}
// $sql=$sql." limit $pagenum,20";
// $arr=$this->dao->query($sql);
if ($arr) {
foreach ($arr as $key => $value) {
if ($arr[$key]['pics']) {
// 取json数组图片第一张作为图片
$json_arr = json_decode($arr[$key]['pics']);
$arr[$key]['pics'] = imgUrl($json_arr[0]);
}
$arr[$key]['header'] = imgUrl($value['header']);
$arr[$key]['area_name'] = CityController::getName($value['area_id']);
$arr[$key]['service_name'] = CommonController::getMerchantServerListName($value['id']);
$arr[$key]['distance'] = getDistance($latitude, $longitude, $arr[$key]['latitude'], $arr[$key]['longitude']);
// 计算两点距离
}
if ($sort == 1) {
// 按距离升序和降序
$arr1 = sort_asc($arr);
}
if ($sort == 2) {
$arr1 = sort_desc($arr);
}
$data['list'] = $arr1;
$this->jsonUtils->echo_json_data(0, 'ok', $data);
exit;
} else {
$this->jsonUtils->echo_json_msg(1, '该附近没有商家信息...');
}
}
<?php
set_time_limit(0);
$iterations = array();
$iterations_map = array();
for ($i = 1000; $i <= 9998; $i++) {
$digits[$i]["number"] = split_number($i);
$digits[$i]["valid"] = validity_check($digits[$i]["number"]);
$digits[$i]["desc"] = sort_desc($digits[$i]["number"]);
$digits[$i]["asc"] = sort_asc($digits[$i]["number"]);
$digits[$i]["iterations"] = "";
if ($digits[$i]["valid"] == true) {
$digits[$i]["iterations"] = calculations($digits[$i]["desc"], $digits[$i]["asc"]);
}
if (in_array($digits[$i]["iterations"], $iterations) == true && $digits[$i]["valid"] == true) {
$iterations_map[array_search($digits[$i]["iterations"], $iterations)]++;
} else {
if ($digits[$i]["valid"] == true) {
array_push($iterations, $digits[$i]["iterations"]);
$iterations_map[array_search($digits[$i]["iterations"], $iterations)] = 1;
}
}
}