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<?php $tests = [ 'http://example.com/topic/Funny/G1pdeJm', 'http://example.com/topic/Funny/viral', 'http://example.com/topic/Funny/time', 'http://example.com/topic/Funny/top', 'http://example.com/topic/Funny/top/week', 'http://example.com/topic/Funny/top/month', 'http://example.com/topic/Funny/top/year', 'http://example.com/topic/Funny/top/all', 'http://example.com/topic/NotFunny/IL2dsRq', ]; $result = []; foreach ($tests as $str) { if (preg_match('~^http://[^/]+/topic/Funny/(?!viral|time|top(?:/week|/month|/year|/all)?)~', $str)) { $result[] = $str; } } var_export($result);
Output for git.master_jit, git.master, rfc.property-hooks
array ( 0 => 'http://example.com/topic/Funny/G1pdeJm', )

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