Print_r and foreach giving different results - php

Question

I have a pdo function that fetches usernames and user ids from the database. When I run the function i get different results.
print_r gives
Array ( [ID] => 58 [username] => abdullatif )
and foreach gives me
5-5a-a
There is one row that matches the pdo query in the database.
public function getUserCredentials($userName, $password){
$this->db = new Dbpdo_Database();
$this->db->connect();
try{
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt = $dbh->prepare("SELECT
ID
FROM
administrators
WHERE
username = :username
AND
user_password = :password
LIMIT 1");
$stmt->bindParam(':username', $userName, PDO::PARAM_STR);
$stmt->bindParam(':password', $password, PDO::PARAM_STR);
}
$stmt->execute();
/*** fetch the results ***/
$results = $stmt->fetchAll(PDO::FETCH_ASSOC);
return $results;
/*** close the database connection ***/
//$dbh = null;
}
catch(PDOException $e){
echo $e->getMessage();
}
}
$results = $mydb->getUserCredentials($userName, $password);
foreach ($results as $row){
echo $row['ID'].'-'.$row['username'];
}
print_r($results);
Any hints as to whats wrong would be much appreciated. Thanks in advance.

Answer 1

Your $results array is one-dimensional - it has an ID and a username. Your foreach is looking for a two-dimensional array, with each row containing an ID and a username. Change it to:
foreach($results as $key => $value) {
echo $key . '-' . $value;
}
and you should get:
ID-58
username-abdullatif