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<?php $str = 'comment=Accept established chain=forward connection-state=established'; preg_match_all('/([a-z-]+)=(.*?)(?=\s*[a-z-]+=|$)/', $str, $matches); print_r($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => comment=Accept established [1] => chain=forward [2] => connection-state=established ) [1] => Array ( [0] => comment [1] => chain [2] => connection-state ) [2] => Array ( [0] => Accept established [1] => forward [2] => established ) )

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