Calling PDO query within a function - php

Question

I'm 'doomsday' (mysql_ depreciation!) prepping some of my older applications that take the use of mysql_ extentions. I am currently converting them into PDO.
I use a lot of functions to make my work easy. However I cant get the $db->query within a function to work. For example I'm converting this function:
function GetAccount($account_id){
$Query = mysql_query("SELECT name, balance, account_number FROM accounts WHERE id = '$account_id'");
if (mysql_num_rows($Query) > 0){
$Result = mysql_fetch_assoc($Query);
return $Result;
} else {
return false;
}
}
Into this PDO function.
function GetAccount($account_id){
global $db;
$Result = $db->query("SELECT name, balance, account_number FROM accounts WHERE id = '$account_id'");
if (count($Result) > 0){
return $Result;
} else {
return false;
}
}
I have established a PDO connection outside of this function, which works fine with queries outside of any function.
The problem for the second (PDO) function is that the $Result is empty. A var_dump returs: bool (false).
What am I forgetting/doing wrong?
Thank you :)

Answer 1

Fixed it, new function:
function GetAccount($account_id){
global $db;
$Result = $db->prepare("SELECT name, balance, account_number FROM accounts WHERE id = '$account_id'");
$Result->execute();
$Result = $Result->fetch();
if (count($Result) > 0){
return $Result;
} else {
return false;
}
}
The only thing I did was :
$Result->prepare("query stuff");
$Result->execute();
$Result = $Result->fetch();