Visual Basic .NET <-> PHP | Boolean data type

x= true
 y= false
Dim b As boolean= x          ' b = true
Dim b2 As boolean= x and y    ' b2 = false
Dim b3 As boolean= CBool( 0)  ' b3 = false

$x= true; $y= false;
$b= $x;          // b = true
$b2= $x && $y;    // b2 = false
$b3= (bool) 0;  // b3 = false

x= true
 y= false
Dim b As boolean= x          ' b = true
Dim b2 As boolean= x and y    ' b2 = false
Dim b3 As boolean= CBool( 0)  ' b3 = false

$x= true; $y= false;
$b= $x;          // b = true
$b2= $x && $y;    // b2 = false
$b3= (boolean) 0;  // b3 = false