$x1 = 10
$x2 = '10'
$y = 5
($x1 == $x2) = (10 == '10') = 1
($x1 === $x2) = (10 === '10') =
($x1 != $y) = (10 != 5) = 1
($x2 <> $y) = ('10' <> 5) = 1
($x1 < $y) = (10 < 5) =
($x1 > $y) = (10 > 5) = 1
($x2 > $y) = ('10' > 5) = 1