php判断一个时间是否在某个时间区间内

//设置中国时区
date_default_timezone_set('PRC');
//时间格式的时间
//echo date('Y-m-d H:i:s');
 
    $time = time();
    $timeBetween=['08:00:00','18:00:00'];
    
    echo getTime($time,$timeBetween);
    
    function getTime($time,$timeBetween){
    	
    	$checkDayStr = date('Y-m-d ',time());
   	 	$timeBegin1 = strtotime($checkDayStr.$timeBetween[0]);
    	$timeEnd1 = strtotime($checkDayStr.$timeBetween[1]);
    	
    	if($time > $timeBegin1 && $time < $timeEnd1){
	        echo $time."在区间【".$timeBetween[0]."~".$timeBetween[1]."】内";
	    }else{
	    	echo "不在区间内";
	    }
    }