在 foreach 中环绕 div.container

Question

也许是一个简单的问题，就这样吧。我有一个简单的 php foreach 脚本，可以很好地输出结果。我需要用一个容器 div 为每个第二项包装结果。示例可以是：

脚本是什么样的

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
foreach ($result as $date):
   $i++; 
   echo '<div class="range" data-range="'. $date->id .'">';
   echo 'test';
   echo '</div>';
endforeach;

将输出：

<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>

但我需要以下示例：一个容器 div 环绕范围内的每一秒结果。像这样：

<div class="container">
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
</div>
<div class="container">
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
</div>
<div class="container">
<div class="range" data-range="00000000"></div>
<div class="range" data-range="00000000"></div>
</div>

我试过：

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
foreach ($result as $date):
   $i++; 
   if($i%2 == 0) {
     echo $i > 0 ? "</div>" : "";
     echo "<div class='container'>";
   }
   echo '<div class="range" data-range="'. $date->id .'">';
   echo 'test';
   echo '</div>';
endforeach;

但是我正在寻找的结果将无法正常工作:) 想法？ =)

Answer 1

你们真的很亲密。 :)

您希望您的容器在 foreach 循环之外回显。

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
echo '<div class="container">';
foreach ($result as $date):
   $i++;
   echo '<div class="range" data-range="'. $date->id .'">';
   echo 'test';
   echo '</div>';
endforeach;
echo '</div>';

编辑：抱歉，我误解了你的问题，但仍然很简单。

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
foreach ($result as $date):
   $i++; 
   if($i%2 == 1) {
     echo "<div class='container'>";
   }
   echo '<div class="range" data-range="'. $date->id .'">';
   echo 'test';
   echo '</div>';
   if($i%2 == 0) {
     echo "</div>";
   }
endforeach;

编辑 2：哇，真的没那么简单。如果结果数量为奇数，您将不会关闭最后一个标签。所以，你真的想要这个：

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
foreach ($result as $date):
   if($i%2 == 0) {
     echo "<div class='container'>";
   }
   echo '<div class="range" data-range="'. $date->id .'">';
   echo 'test';
   echo '</div>';
   if($i%2 == 1) {
     echo "</div>";
   }
   $i++; 
endforeach;
if($result->Size() % 2 == 1)
{
    echo '</div>';
}

Answer 2

这段代码应该能满足您的需求

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i = 0;
foreach ($result as $date):
   $i++;
   if($i%2 == 1) {
       echo '<div class="container">';
   }
   echo '<div class="range" data-range="'. $date->id .'"></div>';
   if($i%2 == 0) {
       echo '</div>';
   }
endforeach;

Answer 3

<?php
define ('TEMPLATE_SUB_CONTAINER',   '<div class="range" data-range="%s">%s</div>');
define ('TEMPLATE_CONTAINER',       '<div class="container">%s</div>'); 

$result = $wpdb->get_results('SELECT id, fdate, tdate FROM database');
$i      = 0 ;
$buffer = '';

foreach ($result as $date):
   if ($i == 2) {
       flushBuffer($buffer);
       $buffer = '';
       $i=0;
   }
   $buffer .= sprintf(TEMPLATE_SUB_CONTAINER . '<br />', $date->id, 'test');
   $i++;
endforeach;
flushBuffer($buffer);

function flushBuffer($buffer) {
    if (strlen($buffer) > 0) {
        $buffer .= spintf(TEMPLATE_CONTAINER, $buffer);
        printf("%s", $buffer);
    }
}

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