如何使用简单的html dom用链接替换关键字

Question

how to find hello keyword in a html content inside <p> tag directly (not sub tags e.g. <a> tag) and replace it with a link

i dont want alter the html attributes

HTML:

<p>hello world
    <a href="hello.html">hello</a>
</p>
<img src="hello.png" alt="image" />

I need an output like this:

<p><a href="hello">hello</a> world
    <a href="hello.html">hello</a>
</p>
<img src="hello.png" alt="image" />

not this:

<p><a href="hello">hello</a> world
    <a href="<a href="hello">hello</a>.html">hello</a>
</p>
<img src="<a href="hello">hello</a>.png" alt="image" />

What i tried

include('inc/simple_html_dom.php');
// Create a DOM object
$html = new simple_html_dom();

// Load HTML from a string

$dom = '
<p>hello world
    <a href="hello.html">hello</a>
</p>
<img src="hello.png" alt="image" />
';

$html->load($dom);

foreach($html->find('p') as $p)
{
    $p->innertext = str_replace($searchArray, $replaceArray, $p->innertext);
}

echo $html;

Answer 1

You should be able to do:

foreach($html->find('text') as $text){
  if($text->parent->tag != 'p') continue;
  $text->outertext = str_replace($searchArray, $replaceArray, $text->outertext);
}