php 连续留存与留存人数计算

for($i = 0;$i <= $interval;$i++) {

		        $res  = $model->turnround($today,$tomorrow,$flag);

		        $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);

		            	}

		            }

		        }

		        $i==0 ? $total = count($temp) : "";

		        $temp = array_fill_keys($temp, $i);

		        foreach($temp as $k=>$v) {

		        	if(array_key_exists($k,$stats)) {

	                    $stats[$k] = $stats[$k].",".$v;

		        	} else {

		        		$stats[$k] = $v;

		        	}

		        }

		        $today    = $today + 86400;

	            $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;

			*/

			$res = $model->turnround($today,$tomorrow,$flag);

            $todayPeople = array();

	        foreach($res as $value){

	        	$inmatch = isset($value['inmatch']) ? json_decode($value['inmatch']) : array();

	            foreach($inmatch as $val) {

	            	if(!in_array($val, $todayPeople)) {

                        array_unshift($todayPeople,$val);

	            	}

	            }

	        }

	        $todayNum   = count($todayPeople);

	        $atToday    = $today + $interval*86400;

	        $atTomorrow = $tomorrow + $interval*86400;

	        $atRes = $model->turnround($atToday,$atTomorrow,$flag);

	        $atPeople = array();

	        foreach($atRes as $v){

	        	$atInmatch = isset($v['inmatch']) ? json_decode($v['inmatch']) : array();

	            foreach($atInmatch as $val) {

	            	if(!in_array($val, $atPeople)) {

                        array_unshift($atPeople,$val);

	            	}

	            }

	        }

	        $same = array_intersect($todayPeople,$atPeople);

	        $atNum= count($same);

	        $ret['turnround']['all']   = $todayPeople;

			$ret['turnround']['total'] = $todayNum;

			$ret['turnround']['stats'] = "";

			$ret['turnround']['num']   = $atNum;