PHP preg_match_all of parent with class name

Question

Using preg_match_all is it possible to match elements within a parent that has a specific class name?

For example I have this HTML markup:

<div class="red lorem-ipsum>
  <a href="#">Some link</a>
</div>

<div class="red>
  <a href="#">Some link</a>
</div>

<div class="something red lorem-ipsum>
  <a href="#">Some link</a>
</div>

Can I match each <a> that's within a parent with class name red?

I tried this but it does not work:

~(?:<div class="red">|\G)\s*<a [^>]+>~i

DOMDocument is a much better way, use XPath (with stackoverflow.com/questions/8680721/…). — Nigel Ren
– Nigel Ren, Commented Feb 22, 2019 at 20:06

trincot · Accepted Answer · 2019-02-22 20:11:55Z

2

Use DOMDocument in combination with DOMXPath. Here the HTML is in the $html variable:

$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$matches = $xpath->query("//div[contains(concat(' ', @class, ' '), ' red ')]/a");
foreach($matches as $a) {
    echo $a->textContent;
}

answered Feb 22, 2019 at 20:11

trincot

357k38 gold badges282 silver badges338 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

CyberJ Over a year ago

Thank you for the code!I have not tried DOMXPath before. Where am I selecting the <a>? is it the /a at the end?

trincot Over a year ago

Yes, indeed: / means "child" (// is "descendant"), and "a" is the tag name. The more complex part is to match a class. More about that part here

Collectives™ on Stack Overflow

PHP preg_match_all of parent with class name

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related