__call:
string(3) "ABC"
__call:
string(3) "ABC"
__call:
string(3) "XYZ"
__call:
string(3) "WWW"
__call:
string(3) "ABC"
__callstatic:
string(1) "A"
__callstatic:
string(1) "B"
__callstatic:
string(1) "C"
__callstatic:
string(3) "FOO"
__callstatic:
string(3) "FOO"