計算回頭率方法

public function probability() {
        global $_INPUT;
        $ret        = array();
        $time       = $_INPUT['date'] && preg_match('/^\d{4}-\d{2}\-\d{2}$/', $_INPUT['date']) ? strtotime($_INPUT['date']) : strtotime('today');
        $today      = $time;          //该天时间头
        $tomorrow   = $time + 86400;  //该天时间尾
        $flag       = 1;              //是否进入比赛
        $model      = Model::getInstance('logs.fixedlog');
        $paymodel   = Model::getInstance('main.payment');
        $stats      = array();
        $num        = 0;              //连续一周回头人数
        $option     = isset($_INPUT['app']) ? intval($_INPUT['app']) : 1;
        $interval   = isset($_INPUT['period']) ? intval($_INPUT['period']) : 1; //时间区间一周
        if($option == 1) {
            for($i = 0;$i <= $interval;$i++) {
                $res  = $model->turnround($today,$tomorrow,$flag);  //获取该天参加比赛的会员
                $temp = array();
                foreach($res as $value){
                    $inmatch = isset($value['inmatch']) ? json_decode($value['inmatch']) : array();
                    foreach($inmatch as $val) {
                        if(!in_array($val, $temp)) {
                            array_unshift($temp,$val);  //去掉该天重复参加比赛会员
                        }
                    }
                }
                $i==0 ? $total = count($temp) : "";
                $temp = array_fill_keys($temp, $i);  //把会员记录导入stats数组
                foreach($temp as $k=>$v) {
                    if(array_key_exists($k,$stats)) {   //如果stats数组里面存着该会员ID，则尾部追加该登陆的每日号
                        $stats[$k] = $stats[$k].",".$v;
                    } else {
                        $stats[$k] = $v;
                    }
                }
                $today    = $today - 86400;   //逐次改变每日号起止时间
                $tomorrow = $tomorrow - 86400;
            }
            $strlen = ($interval+1)*2-1;
            foreach($stats as $v) {
                if(isset($v)) {
                    strlen(trim($v)) == $strlen ? $num++ : $num;
                }
            }
            $ret['turnround']['all']   = $stats;
            $ret['turnround']['total'] = $total;
            $ret['turnround']['stats'] = count($stats);
            $ret['turnround']['num']   = $num;
        } else {
            $res  = $model->turnround($today,$tomorrow,$flag);  //获取该天参加比赛的会员
            $temp = array();
            foreach($res as $value){
                $inmatch = isset($value['inmatch']) ? json_decode($value['inmatch']) : array();
                foreach($inmatch as $val) {
                    if(!in_array($val, $temp)) {
                        array_unshift($temp,$val);  //去掉该天重复参加比赛会员
                    }
                }
            }
            foreach($temp as $k=>$v) {
                $paystatus = $paymodel->hasCharge($v,$tomorrow,$today-1);
                isset($paystatus) && $paystatus['num']<>0 ? $num++ : "";

            }
            $ret['payrate']['all']   = $temp;
            $ret['payrate']['total'] = count($temp);
            $ret['payrate']['num']   = $num;
        }
        return $this->ret($ret);
    }

以上就介紹了計算回頭率方法，包括了方面的內容，希望對PHP教程有興趣的朋友有所幫助。