为什么 php while 不循环扫描 x #of 次并包含 x # 个文件

我有一些代码用于根据表单输入创建电子邮件。第一个输入之一，名为"nosection"的数字输入用于控制电子邮件中的部分数。然后是"sectionblock"输入（例如sectionblock1，sectionblock2），用于控制电子邮件每个部分中的内容块。

我想使用一个 while 循环，它会遍历每个部分的值，直到达到"nosection"值，在运行时拉动每个部分的块......但是，它似乎只包括第一个部分块（即部分块1）。

例如，假设以下内容为真：

• $nosections = 3
• $sectionblock 1 = "品尝类块"
• $sectionblock 2 = "rrtastings"
• $sectionblock 3 = "葡萄酒特价"

有人可以告诉我为什么如果我运行上述内容，它只包含 tastetingclassblock 的代码块，而不是 rrtastings 和 winespecials 的代码块？

<?php 
$i=1; 
while ($i <= $nosections):
    if(${'sectionblock'.$i} == 'weekendtasting'):
        include('plaintext/weekend-tastings/weekend-tasting.php');
    elseif(${'sectionblock'.$i} == 'tastingclassblock'):
        include('plaintext/special-classes/tasting-class-code.php');
    elseif(${'sectionblock'.$i} == 'rrtastings'):
        include('plaintext/resroomtastings/tasting-class-code.php');
    elseif(${'sectionblock'.$i} == 'weeklyad'):
        include('plaintext/weekly-ad/weeklyad.php');
    elseif(${'sectionblock'.$i} == 'customerappreciation'):
        include('plaintext/customer-appreciation/customer-appreciation.php');
    elseif(${'sectionblock'.$i} == 'giftsets'):
        include('plaintext/holiday-giftsets/gift-sets-code.php');
    elseif(${'sectionblock'.$i} == 'winespecials'):
        include('plaintext/winespecials/wine-specials.php');
    elseif(${'sectionblock'.$i} == 'spiritspecials'):
        include('plaintext/spiritspecials/spirit-specials.php');
    elseif(${'sectionblock'.$i} == 'featuredfood'):
        include('plaintext/featured-foodgroup/featured-food-group.php');
    elseif(${'sectionblock'.$i} == 'featuredrecipe'):
        include('plaintext/featured-recipe/featured-recipe.php');
    endif;
$i++;
endwhile; ?>