在for循环php中引导崩溃

Question

I would like an bootstrap accordion in PHP for loop. But it doesn't collapse. I'm not sure what I'm doing wrong.

Here my code.

<?php
$row_count = 1;
for ($x = 0; $x < 5; $x++) {

  echo $row_count ;
  ?>


  <div class="panel-group" id="accordion">
    <div class="panel panel-default">
      <div class="panel-heading">
        <h4 class="panel-title">
          <a data-toggle="collapse" data-parent="#accordion" href="#collapse1<?php echo $row_count; ?>">Collapsible Group 1</a>
        </h4>
      </div>
      <div id="collapse1<?php echo $row_count ?>" class="panel-collapse collapse ">
        <div class="panel-body">Lorem.</div>
      </div>
    </div>
  </div> 


  <?php
$row_count  ++;
}

?>

Answer 1

Rewrite your code as below:-

<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<?php
$row_count = 1;
for ($x = 0; $x < 5; $x++) {  ?>

    <div class="panel panel-default" >
      <div class="panel-heading" role="tab" id="heading<?php echo $row_count ?>">
        <h4 class="panel-title">
          <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapse<?php echo $row_count; ?>" aria-expanded="false"">Collapsible Group <?php echo $row_count?></a>
        </h4>
      </div>
      <div id="collapse<?php echo $row_count; ?>" class="panel-collapse collapse " role="tabpanel" aria-labelledby="heading<?php echo $row_count; ?>">
        <div class="panel-body">Lorem.</div>
      </div>
    </div>

<?php $row_count++; } ?>
</div>