PHP 计数器不工作

Question

我创建了一个短代码，其中计数器用于对元素进行计数，但是计数器只计数到“1”，为什么？

<?php $counter = "0";?>
<?php foreach($this->group('inhalt') as $i => $fields): ?>
    <?php $counter += 1 ;?>
    <div class="ce_countup autogrid-id_<?php echo $this->id; ?>_<?php echo $counter;?> autogrid-type_cte <?php if($counter ="1"){ echo "autogrid-first";} ?> <?php if($counter =$gridKlasse){ echo "autogrid-last";} ?> <?php echo $gridKlasse;?> autogrid_mode_auto autogrid block">
        <h3 id="ce_id_<?php echo $this->id; ?>_<?php echo $counter;?>"><?php echo $this->field('zahl#'.$i)->value(); ?></h3>
        <?php echo $this->field('bezeichnung#'.$i)->value(); ?>
    </div>   
<?php endforeach; ?>

Answer 1

你的问题就在这里

<?php if($counter ="1"){ echo "autogrid-first";} ?>

这里

<?php if($counter = $gridKlasse){ echo "autogrid-last";} ?>

您总是 re-initializing 将 $counter 变量设为 1，然后对整个表达式进行布尔求值。您应该使用 == 或 === 来解决问题。另外，$gridKlasse 应该是一个数字。

试试这个：

<?php $counter = 0;?>
    <?php foreach($this->group('inhalt') as $i => $fields): ?>
    <?php $counter += 1 ;?>
    <div class="ce_countup autogrid-id_<?php echo $this->id; ?>_<?php echo $counter;?> autogrid-type_cte <?php if($counter === 1){ echo "autogrid-first";} ?> <?php if($counter === $gridKlasse){ echo "autogrid-last";} ?> <?php echo $gridKlasse;?> autogrid_mode_auto autogrid block">
        <h3 id="ce_id_<?php echo $this->id; ?>_<?php echo $counter;?>"><?php echo $this->field('zahl#'.$i)->value(); ?></h3>
        <?php echo $this->field('bezeichnung#'.$i)->value(); ?>
    </div>   
<?php endforeach; ?>

PHP 计数器不工作

PHP counter doesn't work

php

counter