$data = array(6,1,1,4,5,1,4);

$k_rank = 1;
foreach($data as $key=>$d){
    if ($key === 0) {
         $outline = $d;
         continue;
    }
    if ($key ===1 ) {
        $k_point = $d;
         continue;
    }
    if ($k_point < $d){
       $k_rank++;
    }
}

foreach($data as $key=>$d){
    if ($key === 0) {
         continue;
    }
    if ($key === $outline){
        echo $k_rank;
    }else{
        echo $d;
    }
    echo PHP_EOL;
}