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<?php $r = new \ReflectionClass('PDO'); var_dump($r->getExtension());
Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
object(ReflectionExtension)#2 (1) { ["name"]=> string(3) "PDO" }
preferences:
33.9 ms | 406 KiB | 5 Q