Php Foreach内部if（）| if（）关闭问题

我将foreach语句放在if语句中，在结束if语句时遇到了一个问题。if检查一个“类型”，如果条目类型与所选的“类型”匹配，它将用foreach输出所有具有该“类型”的条目

这里有一个例子

<?php 
  if($row->type == 'HTML')
  {
    foreach($content as $row): ?>
       <h2><?= $row->title ?></h2> 
       <span class="rating"> <?= $row->rating?>/5</span>
       <p class="desc"><?= $row->description ?> </p>
       <span class="date"><?= $row->created ?> </span>
       <a href="<?= $row->url ?>">View Tutorial</a>
       <span class="diff"><?= $row->difficulty ?></span>
       <span class="auth">Added by </span> 
<?php } else {
      echo 'No results found';
 }
 endforeach; ?>

/5

由添加

您将在循环中找到

$row

，因此在foreach中保留

if（）else

，以便获取

$row->type

  <?php 
    foreach($content as $row): 
     if($row->type == 'HTML')
      {?>
       <h2><?= $row->title ?></h2> 
       <span class="rating"> <?= $row->rating?>/5</span>
       <p class="desc"><?= $row->description ?> </p>
       <span class="date"><?= $row->created ?> </span>
       <a href="<?= $row->url ?>">View Tutorial</a>
       <span class="diff"><?= $row->difficulty ?></span>
       <span class="auth">Added by </span> 
    <?php } else {
      echo 'No results found';
 }
endforeach; ?>

/5

由添加

您的条件必须是：

<?php 
    foreach($content as $row): ?>
      if($row->type == 'HTML')
      {
       <h2><?= $row->title ?></h2> 
       <span class="rating"> <?= $row->rating?>/5</span>
       <p class="desc"><?= $row->description ?> </p>
       <span class="date"><?= $row->created ?> </span>
       <a href="<?= $row->url ?>">View Tutorial</a>
       <span class="diff"><?= $row->difficulty ?></span>
       <span class="auth">Added by </span> 
     <?php } else {
         echo 'No results found';
      }
     ?>
  <?php   endforeach; ?>

如果（$row->type=='HTML'）
{
/5

由添加

您的foreach条件应高于if-else条件。

<?php 
foreach($content as $row):
    if($row->type == 'HTML') { ?>
        <h2><?= $row->title ?></h2> <span class="rating"> <?= $row->rating?>/5</span>
        <p class="desc"><?= $row->description ?> </p>
        <span class="date"><?= $row->created ?> </span>
        <a href="<?= $row->url ?>">View Tutorial</a>
        <span class="diff"><?= $row->difficulty ?></span>
        <span class="auth">Added by </span> 
    <?php 
    } else {
        echo 'No results found';
    }
endforeach; ?>

/5

由添加

您的结构应该是：

• 如果
  • 弗雷奇
    • 内容
  • 端部foreach
• 否则
  • 其他内容
• 如果结束

你的结构是

• 如果
  • 弗雷奇
    • 内容
• 否则
  • 其他内容
• 如果结束
  • 结束foreach

您可能正在寻找以下内容：

<?php 
$found = FALSE; // used to track whether something has been found.
foreach($content as $row){
   if($row->type == 'HTML')
   {
       $found = TRUE; // there is at least one row with ->type == 'HTML'
       ?>
       <h2><?= $row->title ?></h2> 
       <span class="rating"> <?= $row->rating?>/5</span>
       <p class="desc"><?= $row->description ?> </p>
       <span class="date"><?= $row->created ?> </span>
       <a href="<?= $row->url ?>">View Tutorial</a>
       <span class="diff"><?= $row->difficulty ?></span>
       <span class="auth">Added by </span> 
    <?php 
   }
 }; // moved to the {} closing
 // test whether any valid rows have been found (set above)
 if(!$found){echo 'No results found';}
 ?>

/5

由添加

对这个问题的理解非常好。+1感谢你的帮助，上面的那个家伙比你快到了。如果你觉得这个答案有用，请标记为答案