The $valueis "food"
The $valueis "drink"
The $valueis "sleep"
Double: The key  is '0' and the value is 'food'
Double: The key  is '1' and the value is 'drink'
Double: The key  is '2' and the value is 'sleep'
Double: The key  is 'dog' and the value is 'Spot'
Double: The key  is 'cat' and the value is 'Fluffy'
Double: The key  is 'giraffe' and the value is 'Gerald'
Double: The key  is 'elephant' and the value is 'Dumbo'
Double: The key  is '0' and the value is 'Alan'

$zero == $zeroString? yeah
$zero == $false? yeah$false == $zeroString? yeah
$zero === $zeroString? no
$zero === $false? no
$false === $zeroString? no