Someone

~ $ cat test.php
<?php

$x = 1;
switch ($x) {
case $x++:
        print "here\n";
        break;
case $x:
        print "there\n";
}

switch ((int)$x) {
case $x++:
        print "here\n";
        break;
case $x:
        print "there\n";
}
~ $ php test.php
there
here