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<?php $urls = <<<URLS /ru949-mlc /ru949-mlc/ //ru949-mlc/ /fff/ru949-mlc /fff/ru949-mlc/ /fff/ru949-mlc/dededede URLS; // should match only last two urls $regex = <<<REGEX /(?!(^\/[a-z]{2}\d{3}\-[a-z]{3}\/))(\/(?<sku>[a-z]{2}\d{3}\-[a-z]{3})\/)/x REGEX; foreach (explode("\n", $urls) as $url) { $match = preg_match($regex, $url, $matches); print_r([$url, $match, $matches['sku'] ?? null]); } //
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => /ru949-mlc [1] => 0 [2] => ) Array ( [0] => /ru949-mlc/ [1] => 0 [2] => ) Array ( [0] => //ru949-mlc/ [1] => 1 [2] => ru949-mlc ) Array ( [0] => /fff/ru949-mlc [1] => 0 [2] => ) Array ( [0] => /fff/ru949-mlc/ [1] => 1 [2] => ru949-mlc ) Array ( [0] => /fff/ru949-mlc/dededede [1] => 1 [2] => ru949-mlc )

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