Why can't you check a single instance of a variable for two logic conditions in php?

Why do I have to do this in PHP:

if ($var > 0 && $var < 700) {
    // DO STUFF
}

Why can't I do this:

if (0 < $var < 700) {
    // DO STUFF
}

IS THERE A WAY TO DO THAT WITHOUT HAVING TO STATE $var TWICE?