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<?php interface StatementInterface { public function setFetchMode(FetchAs $mode, string|int|null $a1 = NULL, array $a2 = []); public function execute(?array $args = [], array $options = []); } class StatementBase implements StatementInterface { public function setFetchMode($mode, $a1 = NULL, $a2 = []) {} public function execute($args = [], $options = []) {} }