PHP getting count for values that falls within expected ranges

I have a list containing a bunch of values from 1-400. I am trying to divide the data into ranges like [1-50], [51-100], .. , [351-400] and get the count for the values that falls within the range given . I basically have the code working. So, my question would be is there a better way to do this or what would be a good practise for this?

$temp = array(); //temp array to store the values from mysql
$final_array = array //final array to store the counts from the range initialized to 0 
    (
            "0" => 0,
            "1-50" => 0,
            "51-100" => 0,
            "101-150" => 0,
            "151-200" => 0,
            "201-250" => 0,
            "251-300" => 0,
            "301-350" => 0,
            "351-400" => 0
    );

$sql = "SELECT count(*) AS total FROM user GROUP BY user_id";

$statement = $DB_->link->prepare ( $sql );
$statement->execute ();

    if ($result = $statement->get_result ())
    {
        while ( $row = $result ->fetch_assoc() )
        {
            $temp [] = $row;
        }
    }
    else
    {
        die(mysql_error());
    }

    foreach ($temp as $child)
    {
        if( $child['total'] >= 351 && $child['total'] <= 400)
        {
            $final['351-400']++;            
        }
        elseif( $child['total'] >= 301 && $child['total'] <= 350)
        {
            $final['301-350']++;            
        }
        ...
        elseif( $child['total'] >= 1 && $child['total'] <= 50)
        {
            $final['1-50']++;           
        }
    }

Desired results

Array 
( 
    [0] => 0 
    [1-50] => 1 
    [51-100] => 0 
    [101-150] => 0 
    [151-200] => 1 
    [201-250] => 0 
    [251-300] => 4 
    [301-350] => 5 
    [351-400] => 18 
)