多个<?php if .. echo'..'; ?>如何优化写法？

for($i=1; $i<7; $i++) {
    if(in_category($i)) {
        echo "<p class=\"class{$i}\"></p>";
    }
}

$arr = array(
    10=>'<p class="class1"><span class="icon-home"></span></p>',
    25=>'<p class="class2"><span class="icon-cat"></span></p>', 
    38=>'<p class="class3"><span class="icon-dog"></span></p>', 
    44=>'<p class="class4"><span class="icon4"></span></p>', 
    50=>'<p class="class5"><span class="icon5"></span></p>', 
    61=>'<p class="class6"><span class="icon6"></span></p>'
);
function inCatToHtml($arr) {
    while (list($key, $value) = each($arr)) {
        if(in_category($key)) {
            echo $arr[$key];
        }
    }
}
inCatToHtml($arr);

<?php

foreach(range(1,6) as $categoryNum) {
    if(in_category($categoryNum)) {
        echo '<p class="class"'.$categoryNum.'"></p>';
    }
}

<?php

$categoryIcon = [
    10 => 'icon-home',
    ....
];

具体就不写了...和上面一样。

<?php
 
$num = count(['1','2','3','4','5','6']);

for( $i=0; $i<$num; $i++ )
{
    if(in_category($num[$i]))
    {
        echo "<p class=class".$i."></p>";
    }
}
?>

<?php if ($currentCategory = Category::currentCategory()): ?>
<p class="<?=$currentCategory->labelClass?>"><span class="<?=$currentCategory->iconClass?>"></span></p>
<?php endif; ?>

function in_category( $num ) {
    switch ($num) {
        case '10':
            echo'<p class="class1"><span class="icon-home"></span></p>';
            break;
        case '25':
            echo'<p class="class2"><span class="icon-cat"></span></p>';
            break;
        case '38':
            echo'<p class="class3"><span class="icon-dog"></span></p>';
            break;
        case '44':
            echo'<p class="class4"><span class="icon4"></span></p>';
            break;
        default:
            echo '';
            break;
    }
}

$categroies = [
    10=>['class'=>'icon-home'],
    25=>['class'=>'icon-dog'],
    38=>['class'=>'icon-cat'],
    44=>['class'=>'icon4']
    //当然这里的数据可以是从数据库里封装好的
];
//等待输出的html
$html = '';
$class_i = 1;
foreach($categories as $key => $category) {
    if (in_category($key)) {
        $html .= '<p class="class' . ($class_i++) . '"><span class="' . $category['class'] . '"></span></p>';
    }
}
echo $html;