php 8 위젯 기간설정 오류 해결하기

// 기간 체크
function na_sql_term($term, $field) {
	$sql_term = '';


	if($term && $field) {
		// if ($term > 0) || $term == 'week') { 
		if ((is_numeric($term) && $term > 0) || $term == 'week') { // 숫자인지 문자열 검사를 따로
			$term = ($term == 'week') ? 1 + (int)date("w", G5_SERVER_TIME) : $term;
			$chk_term = date("Y-m-d H:i:s", G5_SERVER_TIME - ($term * 86400));
			$sql_term = " and $field >= '{$chk_term}' ";
		} else {
			$day = getdate();
			$today = $day['year'].'-'.sprintf("%02d",$day['mon']).'-'.sprintf("%02d",$day['mday']).' 00:00:00';	// 오늘
			$yesterday = date("Y-m-d", (G5_SERVER_TIME - 86400)).' 00:00:00'; // 어제
			$nowmonth = $day['year'].'-'.sprintf("%02d",$day['mon']).'-01 00:00:00'; // 이번달


			if($day['mon'] == "1") { //1월이면
				$prevyear = $day['year'] - 1;
				$prevmonth = $prevyear.'-12-01 00:00:00';
			} else {
				$prev = $day['mon'] - 1;
				$prevmonth = $day['year'].'-'.sprintf("%02d",$prev).'-01 00:00:00';
			}


			switch($term) {
				case 'today'		: $sql_term = " and $field >= '{$today}'"; break;
				case 'yesterday'	: $sql_term = " and $field >= '{$yesterday}' and $field < '{$today}'"; break;
				case 'month'		: $sql_term = " and $field >= '{$nowmonth}'"; break;
				case 'prev'			: $sql_term = " and $field >= '{$prevmonth}' and $field < '{$nowmonth}'"; break;
			}
		}
	}


	return $sql_term;
}