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<?php function foo(Iterator $i = null) {} var_dump((string) (new ReflectionParameter('foo', 0))->getType());
Output for 8.4.1 - 8.4.12
Deprecated: foo(): Implicitly marking parameter $i as nullable is deprecated, the explicit nullable type must be used instead in /in/tDkLj on line 3 string(9) "?Iterator"
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25
string(9) "?Iterator"
Output for 7.4.0 - 7.4.33
Deprecated: Function ReflectionType::__toString() is deprecated in /in/tDkLj on line 5 string(8) "Iterator"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
string(8) "Iterator"
Output for 5.6.0 - 5.6.25
Fatal error: Call to undefined method ReflectionParameter::getType() in /in/tDkLj on line 5
Process exited with code 255.

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