value = ''
result = false
value = 0
result = false
value = array (
)
result = false
value = '1'
result = true
value = '0'
result = false
value = '-1'
result = true
value = -1
result = true
value = \d::__set_state(array(
))
result = true
value = ''
result = false
value = 0
result = false
value = array (
)
result = false
value = '1'
result = true
value = '0'
result = false
value = '-1'
result = true
value = -1
result = true
value = d::__set_state(array(
))
result = true
Output for 5.0.0 - 5.0.5
value = ''
result = false
value = 0
result = false
value = array (
)
result = false
value = '1'
result = true
value = '0'
result = false
value = '-1'
result = true
value = -1
result = true
value = class d {
}
result = true
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
value = ''
result = false
value = 0
result = false
value = array (
)
result = false
value = '1'
result = true
value = '0'
result = false
value = '-1'
result = true
value = -1
result = true
value = class d {
}
result = false