How to get a link regularly?

Question

PHP

Hello, you need to select all url links from:
a href=" https://site.com/aaa-bbb-ccc-ddd-eee-fff-eee "
a href=" https://site.com/aaaaa- bbbb-ccccccc-ddddd-eeeee "
but under one condition: if the link contains more than 3 characters" - "
i.e. such a link a href=" https://site.com/aaa-bbb-ccc will not work
Tell me please how can this be done

Answer 1

1. Regular to catch all linkshref\=\"(.*)\"
   
2. Well, the number of "dashes" is better to find out by breaking the string with explode and looking at the "length" of the array
   

$output = [];
$html = '
<a href="https://site.com/aaa-bbb-ccc-ddd-eee-fff-eee">
<a href="https://site.com/aaa-bbb-ccc">
<a href="https://site.com/aaaaa-bbbb-ccccccc-ddddd-eeeee">';

preg_match_all('/href\=\"(.*)\"/', $html, $matches);

foreach($matches[1] as $link) {
    $dashes = explode('-', $link);
    if (count($dashes) > 3) $output[] = $link;
}

var_dump($output);

Answer 2

Hello!
There is a site for generating regular expressions - txt2re.com will
suddenly help you)