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<?php $items = array( '<title>Something (TV 1999-2000)</title>' ,'<title>Something (1999-2000)</title>' ,'<title>Something (19999-2000)</title>' ,'<title>Something (99000)</title>' ,'<title>Something (2000)</title>' ); $regex = "/<title>.*?\(.*?(\d{4}(-\d{4})?).*?\)<\/title>/is"; foreach($items AS $k => $str) { preg_match($regex, $str, $matches[$k]); } print_r($matches); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => <title>Something (TV 1999-2000)</title> [1] => 1999-2000 [2] => -2000 ) [1] => Array ( [0] => <title>Something (1999-2000)</title> [1] => 1999-2000 [2] => -2000 ) [2] => Array ( [0] => <title>Something (19999-2000)</title> [1] => 1999 ) [3] => Array ( [0] => <title>Something (99000)</title> [1] => 9900 ) [4] => Array ( [0] => <title>Something (2000)</title> [1] => 2000 ) )

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