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<?php $pdo = new \PDO('sqlite::memory:'); var_dump($pdo->query('select \'-1\'')->fetch(\PDO::FETCH_ASSOC)); var_dump($pdo->query('select "-1"')->fetch(\PDO::FETCH_ASSOC));
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array(1) { ["'-1'"]=> string(2) "-1" } array(1) { [""-1""]=> string(2) "-1" }

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