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<?php $re = '~(?=(/\d+/))~m'; $str = 'https://somesite.com/0/posts/20/290/755653-Title.html'; preg_match_all($re, $str, $matches); print_r($matches[1]);
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => /0/ [1] => /20/ [2] => /290/ )

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