Regex to exclude something

Question

This is my Regex to fetch all tags with class:

preg_match_all('/<\s*\w*\s*class\s*=\s*"?\s*([\w\s%#\/\.;:_-]*)\s*"?.*?>/',file,$matches);

It matches all tags with class like <a class="abc">

The problem is that if any tag contains extra attribute before class than this Regex are unable to get it.

E.g.: <a id="fig_3_1" class="figure-contents">

I want <a class="figure-contents"> by ignore fig_3_1

Any idea to exclude it?

Use an HTML parser, not regex. – Phylogenesis Mar 02 '16 at 12:02 — Phylogenesis, Mar 02 '16 at 12:02

score 0 · Answer 1 · answered Mar 02 '16 at 12:07

0

<\s*\w*.*?\s*class\s*=\s*"?\s*([\w\s%#\/\.;:_-]*)\s*"?.*?>

Probably this works but you better use simple_html_dom

answered Mar 02 '16 at 12:07

quAnton

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score 0 · Answer 2 · edited May 23 '17 at 12:31

Take a look at this amazing SO post and reconsider.

You will most likely be better of using a html parser instead. You can do so using the DOM model.

A simple sample of how it can be used below.

$dom = new DOMDocument;
$dom->loadHTML($html);
$images = $dom->getElementsByTagName('img');
foreach ($images as $image) {
    $image->setAttribute('src', 'http://example.com/' .$image->getAttribute('src'));
}
$html = $dom->saveHTML();

Regex to exclude something

2 Answers2