get array values with a function in PHP - php

Question

What is the proper way to create a function to get array values from a query? I am getting "Undefined index: page_title" error.
However I can get the value without function like: echo $row->page_title;
Or echo $query[0]->title;
function get_page($id) {
$db = new DB();
$query = $db->get_rows("SELECT * FROM pages WHERE id = :id ", array('id' => $_GET['id']) );
foreach ($query as $row) {
$page_id = $row->id;
$page_title = $row->title;
}
return $query;
}
$page = get_page(1);
echo $page['page_title'];
here is my database class:
function get_rows($query, $values=array(), $fetchType = FETCH_OBJ)
{
$sth = $this->dbh->prepare($query);
if(is_array($values) && (sizeof($values) > 0))
{
foreach($values as $key=>$val)
{
$key = is_numeric($key) ? ($key + 1) : $key;
$sth->bindValue($key,$val);
}
}
if($sth->execute())
return $sth->fetchAll($fetchType);
}

Answer 1

To make the function reusable, I would rewrite it the following way
function get_page($id, $col) {
$db = new DB();
$query = $db->prepare('SELECT * FROM pages WHERE id = :id');
$query->execute(array(':id' => $id));
$results = $query->fetch(PDO::FETCH_NUM);
return $results[0][$col];
}
$page = get_page(1, 'page_title');
echo $page;
I skipped the foreach as you said that all id's are unique so you should only ever have 1 result
Also it may not be a bad idea to add some error checking to make sure you do get back what you expect from the query and to make sure it is not empty.
Edit: Sorry if the syntax is a little off, dont have anything to test the code against quickly.