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<?php try { $tz = new DateTimeZone('Invalid timezone'); } catch (\Exception $exception) { echo "Invalid time zone (error: " . $exception->getMessage() . ")\n"; $tz = null; } var_dump($tz);
Output for git.master, git.master_jit, rfc.property-hooks
Invalid time zone (error: DateTimeZone::__construct(): Unknown or bad timezone (Invalid timezone)) NULL

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