PHP警告：数组列表中的非法字符串偏移量

Question

我在opencart页脚控制器中添加此代码：

    $data['tags_name'] = array('inux','ubunuto','php');
    foreach ($data['tags_name'] as $tag) {
        $data['tags'][] = array(
            'title' => $tag['tags_name'],
            'href'  => $this->url->link('product/search', 'tag=' . $tag['tags_name'])
        );
    }

并在footer.tpl中添加此行：

<?php foreach ($tags as $tag) { ?>
    <li><a class="" target="" href="<?php echo $tag['href']; ?>"><?php echo $tag['title']; ?></a></li>
<?php } ?>

我检查输出： print_r($tags); 结果是：

Array ( [0] => Array ( [title] => i [href] => http://localhost/opencart/index.php?route=product/search&tag=i )
 [1] => Array ( [title] => u [href] => http://localhost/opencart/index.php?route=product/search&tag=u )
 [2] => Array ( [title] => p [href] => http://localhost/opencart/index.php?route=product/search&tag=p ) ) 

我看到只有标签的第一个单词喜欢： i or u or p看到这个错误：

警告：/Applications/XAMPP/xamppfiles/htdocs/opencart/vqmod/vqcache/vq2-system_storage_modification_catalog_controller_common_footer.php中的非法字符串偏移'tags_name'

怎么办修复此错误并输出？！

Answer 1

你的数组是数组的多维数组。试着像..

<?php foreach ($tags as $key=>$value) { ?>
    <li><a class="" target="" href="<?php echo $value['href']; ?>"><?php echo $value['title']; ?></a></li>
<?php } ?>

这是一个例子：

<?php
$arr = array(array('title'=>'i','href'=>'http://localhost/opencart/index.php?route=product/search&tag=i'),array('title'=>'u','href'=>'http://localhost/opencart/index.php?route=product/search&tag=u'),array('title'=>'p','href'=>' http://localhost/opencart/index.php?route=product/search&tag=p'));
//print_r($arr);

foreach($arr as $key=>$value){ ?>
    <li><a class="" target="" href="<?php echo $value['href']; ?>"><?php echo $value['title'];?></a></li>

<?php } ?>

Answer 2

<?php
$data['tags_name'] = array('inux','ubunuto','php');
    foreach ($data['tags_name'] as $tag) {
        $data['tags'][] = array(
            'title' => $tag['tags_name'],
            'href'  => $this->url->link('product/search', 'tag=' . $tag['tags_name'])
        );
    }
?>

什么是$tag['tag_name'] ？ 你可以echo这个，你会发现一些东西