코드를 줄이고 싶습니다

for ($ii=11,$j=0; $j < 20;$j++,$ii+=7){
    if ( $list [$i]['wr_'. $ii])
        echo "{$list[$i]['wr_'. $ii]}"; 
}

foreach($list[$i] as $col => $val) { // $list[$i] 의 칼럼들 순회	if (is_numeric($col)) {	// 칼럼명에 숫자가 포함되어 있다면 wr_1, wr_2, ... 		$num = (int) ($col); // 칼럼명의 숫자부분만 추출		if ($num >= 11 && $num % 7 == 4) { // 7로 나눈 나머지가 4이면			if ($val === 0)				echo "";			else				echo "<span style='color:red'>{$list[$i][$col]}</span>"; 			} 				}	}

<?php$wr_1  =  100;$wr_2  =  2;$wr_3  =  3;$wr_4  =  4;$wr_5  =  5;$wr_6  =  6;$wr_7  =  7;$wr_8  =  8;$wr_9  =  9;$wr_10 = 1000;$wr_11 = 11;$wr_12 = 12;$wr_13 = 13;$wr_14 = 14;$wr_15 = 15;$wr_16 = 16;$wr_17 = 17;$wr_18 = 18;$wr_19 = 19;$wr_20 = 2000;for ($i = 1; $i <= 20; $i++) {    echo ${'wr_' . $i} . '<br />';}?>

<?php$list = [    [        'wr_1' => 1,        'wr_2' => 0,        'wr_3' => 3    ],    [        'wr_1' => 3,        'wr_2' => 2,        'wr_3' => 0    ]];foreach ($list as $arr) {    $arr = array_filter($arr);    foreach ($arr as $v) {        echo '<span style="color: red;">' . $v . '</span><br />';    }}?>