Description:
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I'm not sure if this is a bug, but when I was developing a wrapper for xml document, I ran into strange behavior when casting types in the return value of the method. I expect that the asInt() method will work just like the directConversion(), but they work differently.

Test script:
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https://3v4l.org/JnFCh

Expected result:
----------------
string(3) "123"
int(123)
int(123)
int(123)

Actual result:
--------------
string(3) "123"
int(123)
int(123)

Fatal error: Uncaught TypeError: Return value of Parser::asInt() must be of the type integer, object returned in /in/JnFCh:22
Stack trace:
#0 /in/JnFCh(44): Parser->asInt()
#1 {main}
  thrown in /in/JnFCh on line 22