php - Find a multi-dimensional array obtained through regular expression

Question

<p class="cate">栏目1</p>
<p class="article-list">
    <ul>
        <li>
            <a href="/article/110001.html">
                <p class="article-img">
                    <img src="" src="/images/5.jpg" />
                </p>
                <p class="article-name">文章标题1</p>
            </a>
        </li>
        <li>
            <a href="/article/110021.html">
                <p class="article-img">
                    <img src="" src="/images/51.jpg" />
                </p>
                <p class="article-name">文章标题2</p>
            </a>
        </li>
    </ul>
</p>
<p class="cate">栏目2</p>
<p class="article-list">
    <ul>
        <li>
            <a href="/article/130401.html">
                <p class="article-img">
                    <img src="" src="/images/23.jpg" />
                </p>
                <p class="article-name">文章标题3</p>
            </a>
        </li>
        <li>
            <a href="/article/114022.html">
                <p class="article-img">
                    <img src="" src="/images/26.jpg" />
                </p>
                <p class="article-name">文章标题4</p>
            </a>
        </li>
        <li>
            <a href="/article/123442.html">
                <p class="article-img">
                    <img src="" src="/images/89.jpg" />
                </p>
                <p class="article-name">文章标题5</p>
            </a>
        </li>
        <li>
            <a href="/article/12225.html">
                <p class="article-img">
                    <img src="" src="/images/42.jpg" />
                </p>
                <p class="article-name">文章标题6</p>
            </a>
        </li>
    </ul>
</p>

.....此处省略相同的代码

看上面的代码.想通过preg_match_all获取一个多维数组(含栏目,文章)
想得类似结果如下:

array(
    '栏目1'=>array(
    array('/article/110001.html','/images/5.jpg','文章标题1'),
    array('/article/110021.html','/images/51.jpg','文章标题2'),
    ),
    '栏目2'=>array(
    array('/article/130401.html','/images/23.jpg','文章标题3'),
    array('/article/114022.html','/images/26.jpg','文章标题4'),
    array('/article/123442.html','/images/89.jpg','文章标题5'),
    array('/article/12225.html','/images/42.jpg','文章标题6'),
    ),

)

每个栏目下的文章数不固定.
谢谢了.

Answer 1

It cannot be achieved by using preg_match_all alone, but such arrays can be reassembled.

You can also use queryList, you will know it by Baidu.

Answer 2

It is recommended to use queryList. Your array cannot be implemented using regular expressions, but you can splice the arrays yourself after matching regular expressions

Answer 3

It’s a bit troublesome, but you can still get the results you want

<?php
$str = '<p class="cate">栏目1</p>
<p class="article-list">
    <ul>
        <li>
            <a href="/article/110001.html">
                <p class="article-img">
                    <img src="" src="/images/5.jpg" />
                </p>
                <p class="article-name">文章标题1</p>
            </a>
        </li>
        <li>
            <a href="/article/110021.html">
                <p class="article-img">
                    <img src="" src="/images/51.jpg" />
                </p>
                <p class="article-name">文章标题2</p>
            </a>
        </li>
    </ul>
</p>
<p class="cate">栏目2</p>
<p class="article-list">
    <ul>
        <li>
            <a href="/article/130401.html">
                <p class="article-img">
                    <img src="" src="/images/23.jpg" />
                </p>
                <p class="article-name">文章标题3</p>
            </a>
        </li>
        <li>
            <a href="/article/114022.html">
                <p class="article-img">
                    <img src="" src="/images/26.jpg" />
                </p>
                <p class="article-name">文章标题4</p>
            </a>
        </li>
        <li>
            <a href="/article/123442.html">
                <p class="article-img">
                    <img src="" src="/images/89.jpg" />
                </p>
                <p class="article-name">文章标题5</p>
            </a>
        </li>
        <li>
            <a href="/article/12225.html">
                <p class="article-img">
                    <img src="" src="/images/42.jpg" />
                </p>
                <p class="article-name">文章标题6</p>
            </a>
        </li>
    </ul>
</p>';
$returnarr = array();
$str = preg_replace("/[\t\n\r]+/","",$str);  

preg_match_all('/<p class="cate">(.*?)<\/p>/',$str,$rs);
preg_match_all('/<ul>(.*?)<\/ul>/',$str,$rscont);
foreach($rs[1] as $key=>$titleval) {
    
    preg_match_all('/<a href="([^<>]+)">.*?<img src="" src="([^<>]+)".*?\/>.*?<p .*?>(.*?)<\/p>.*?<\/a>/',$rscont[1][$key],$list);unset($list[0]);
    $content = array();
    foreach($list[1] as $key=>$val) {
        $cont = array($val,$list[2][$key],$list[3][$key]);
        $content[] = $cont;
    }
    $returnarr[$titleval] = $content;    
}
print_r($returnarr);