Moving key value to the top at 0 position if matches

$barr=array();
for($i=0;$i<count($followingList);$i++){
$qs=trim($_SERVER['QUERY_STRING']);
$barr[$i+1]=$followingList[$i];
if($qs==$followingList[$i]->fpAlias){
$barr[0]=$followingList[$i];
unset($barr[$i+1]);
}
}