function compare($a,$b) {
	$t1 = $entryarray['dist'];
	$t2 = $entryarray['dist'];
	return $t2 - $t1;
}   
usort($entryarray,'compare');

print_r($entryarray);

Array
(
    [0] => stdClass Object
        (
            [id] => 235
            [dist] => 2.1
        )

    [1] => stdClass Object
        (
            [id] => 165
            [dist] => 1.4
        )

    [2] => stdClass Object
        (
            [id] => 432
            [dist] => 1.6
        )