Description:
------------
Despite being available at runtime, PDO::sqliteCreateFunction is not exposed via reflection: neither via the Reflection API, nor via the command line (php --rc).

Test script:
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$conn = new PDO('sqlite::memory:');
var_dump(method_exists($conn, 'sqliteCreateFunction'));

try {
    $re = new ReflectionMethod($conn, 'sqliteCreateFunction');
} catch (ReflectionException $e) {
    echo $e->getMessage(), PHP_EOL;
}



Expected result:
----------------
Method reflection is created

Actual result:
--------------
bool(true)
Method PDO::sqliteCreateFunction() does not exist