Question

我有以下代码，它检索第一个pargraph并回应它：

function first_paragraph() {
  global $post, $posts;
  $first_para = '';
  ob_start();
  ob_end_clean();
  $post_content = $post->post_content;
  $post_content = apply_filters('the_content', $post_content);
  $output = preg_match_all('%(<p[^>]*>.*?</p>)%i', $post_content, $matches);
  $first_para = $matches [1] [0];
  echo $first_para;
}

但是，我想创建第二个函数，它会获得所有段落。有谁知道如何修改第一个代码，所以它检索所有段落？

Answer 1

为什么不使用DOMDocument Class？

<?php
$html='<p>First Paragraph</p>
<a href="somesite">click</a>
<p>Second ....</p>
<p>Third .. Phew last one!</p>';

$dom = new DOMDocument;
@$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('p') as $tag) {
    echo $tag->nodeValue."<br>"; // echoes all paragraph one by one
}

输出：

First Paragraph
Second ....
Third .. Phew last one!

用PHP获取所有段落

1 个答案: