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<?php $str = "({max_w} * {max_h} * {key|value}) / {key_1|value}"; $pattern = "/{\K[^{}|]*\|[^{}|]*(?=})/"; preg_match_all($pattern, $str, $matches); print_r($matches[0]);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => key|value [1] => key_1|value )

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