php - php循环用div和自定义类包装每4个结果

Question

我正在尝试根据每个包装块的结果数添加一些自定义类。

1. 在每个包装块的最后一个添加类last。
2. 计算每个包装块的结果，并根据结果添加自定义类，one-half one-third one-fourth

这是代码：

<?php
$array = range(1, 11);

    $i= 0;
    foreach ($array as $val) {
        if ($i%4 == 0) echo '<div class="item">';
        $i++;
?>
    <span class="one-fourth"><?=$val?></span>
<?php       
        if ($i%4 == 0) echo '</div>';
    }
    if ($i%4 != 0) echo '</div>';
?>

我得到的输出：

<div class="item"> 
    <span class="one-fourth">1</span>
    <span class="one-fourth">2</span>
    <span class="one-fourth">3</span>
    <span class="one-fourth">4</span>
</div>
<div class="item"> 
    <span class="one-fourth">5</span>
    <span class="one-fourth">6</span>
    <span class="one-fourth">7</span>
    <span class="one-fourth">8</span>
</div>
<div class="item"> 
    <span class="one-fourth">9</span>
    <span class="one-fourth">10</span>
    <span class="one-fourth">11</span>
</div>

我想要的输出：

<div class="item"> 
    <span class="one-fourth">1</span>
    <span class="one-fourth">2</span>
    <span class="one-fourth">3</span>
    <span class="one-fourth last">4</span>
</div>
<div class="item"> 
    <span class="one-fourth">5</span>
    <span class="one-fourth">6</span>
    <span class="one-fourth">7</span>
    <span class="one-fourth last">8</span>
</div>
<div class="item"> 
    <span class="one-third">9</span>
    <span class="one-third">10</span>
    <span class="one-third last">11</span>
</div>

标签： phpforeach

Answer 1

这可能最容易通过将数组拆分为块并在循环中单独处理每个块，使用count块的 来决定将哪个类添加到跨度：

$array = range(1, 11);
$chunks = array_chunk($array, 4);

$span_classes = ['', 'one-half', 'one-third', 'one-fourth'];

foreach ($chunks as $chunk) {
    echo "<div class=\"item\">\n";
    $count = count($chunk);
    $span_class = $span_classes[$count-1];
    for ($i = 0; $i < $count; $i++) {
        $last = $i == $count - 1 ? ' last' : '';
        $val = $chunk[$i];
        echo "<span class=\"$span_class$last\">$val</span>\n";
    }
    echo "</div>\n";
}

输出：

<div class="item">
<span class="one-fourth">1</span>
<span class="one-fourth">2</span>
<span class="one-fourth">3</span>
<span class="one-fourth last">4</span>
</div>
<div class="item">
<span class="one-fourth">5</span>
<span class="one-fourth">6</span>
<span class="one-fourth">7</span>
<span class="one-fourth last">8</span>
</div>
<div class="item">
<span class="one-third">9</span>
<span class="one-third">10</span>
<span class="one-third last">11</span>
</div>

3v4l.org 上的演示