请问伙伴们:一段 PHP 代码的含义 - V2EX
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kmdd33
V2EX    PHP

请问伙伴们:一段 PHP 代码的含义

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  •   kmdd33 2018-12-20 18:24:51 +08:00 3139 次点击
    这是一个创建于 2536 天前的主题,其中的信息可能已经有所发展或是发生改变。
    <div class="aw-mod aw-topic-bar" id="question_topic_editor" data-type="question" data-id="<?php echo $this->question_info['question_id']; ?>">
    <div class="tag-bar clearfix">
    <?php foreach($this->question_topics as $key => $val) { ?gt;
    <span class="topic-tag" data-id="<?php echo $val['topic_id']; ?>">
    <a href="topic/<?php echo $val['url_token']; ?>" class="text"><?php echo $val['topic_title']; ?></a>
    </span>
    <?php } ?>

    <?php if ($this->user_id AND ((!$this->question_info['lock'] AND $this->user_info['permission']['edit_topic']) OR $this->user_id == $this->question_info['published_uid'])) { ?><span class="icon-inverse aw-edit-topic"<?php if (sizeof($this->question_topics) == 0) { ?> style="display:none"<?php } ?>><i class="icon icon-edit"></i></span><?php } ?>
    </div>
    </div>


    这段代码中<?php foreach($this->question_topics as $key => $val) { ?> 这段代码如何理解?遍历的是什么地方? question_topics 是一个字段吗?_topics 前面的下划线什么意思? question 又代表什么意思?
    4 条回复    2018-12-23 13:51:27 +08:00
    947211232
        1
    947211232  
       2018-12-20 23:33:44 +08:00
    $this [对象(类)] ->question_topics [对象属性名(变量名)] ,question_topics 只是代码风格规范的一种,
    建议阅读: http://wulijun.github.io/php-the-right-way/ 或者 https://laravel-china.github.io/php-the-right-way/#code_style_guide
    cbasil
        2
    cbasil  
       2018-12-21 08:52:24 +08:00
    这个看起来像是 yii 框架的写法,建议去看看 yii 的文档 https://www.yiichina.com/
    EscYezi
        3
    EscYezi  
       2018-12-21 18:51:36 +08:00 via iPhone
    如果是 Yii 的话,这个 question_topics 是 render 页面时传递的数据。看看这个页面是由哪个 controller 哪个方法渲染的
    kmdd33
        4
    kmdd33  
    OP
       2018-12-23 13:51:27 +08:00
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