Get results from from MySQL using PDO - php

Question

I'm trying to retrieve data from my table using PDO, only I can't seem to output anything to my browser, I just get a plain white page.
try {
// Connect and create the PDO object
$conn = new PDO("mysql:host=$hostdb; dbname=$namedb", $userdb, $passdb);
$conn->exec("SET CHARACTER SET utf8"); // Sets encoding UTF-8
$lastIndex = 2;
$sql = "SELECT * FROM directory WHERE id > :lastIndex AND user_active != '' LIMIT 20"
$sth = $conn->prepare($sql);
$sth->execute(array(':lastIndex' => $lastIndex));
$c = 1;
while ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
echo 'ALL STYLING ETC RESULTS HERE';
$c++;
}
$conn = null; // Disconnect
}

Answer 1

EXAMPLE.
This is your dbc class
<?php
class dbc {
public $dbserver = 'server';
public $dbusername = 'user';
public $dbpassword = 'pass';
public $dbname = 'db';
function openDb() {
try {
$db = new PDO('mysql:host=' . $this->dbserver . ';dbname=' . $this->dbname . ';charset=utf8', '' . $this->dbusername . '', '' . $this->dbpassword . '');
} catch (PDOException $e) {
die("error, please try again");
}
return $db;
}
function getAllData($qty) {
//prepared query to prevent SQL injections
$query = "select * from TABLE where qty = ?";
$stmt = $this->openDb()->prepare($query);
$stmt->bindValue(1, $qty, PDO::PARAM_INT);
$stmt->execute();
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
return $rows;
}
?>
your PHP page:
<?php
require "dbc.php";
$getList = $db->getAllData(25);
foreach ($getList as $key=> $row) {
echo $row['columnName'] .' key: '. $key;
}