$bool
=
false
#1
|
is_int
|
(23)
|
#2
|
is_int
|
("23")
|
#3
|
is_int
|
(23.5)
|
#4
|
is_int
|
("23.5")
|
#5
|
is_int
|
(null)
|
#6
|
is_int
|
(true)
|
#7
|
is_int
|
(false)
|