<? php

function connectDB() {
    $hostname = 'xxxxxxxx';
    $db = 'xxxxxxx';
    $user = 'xxxxxxxx';
    $pass = 'xxxxxxx';

    $dbh = new PDO("mysql:host=$hostname; dbname=$db; charset=utf8", $user, $pass, array(PDO::ATTR_EMULATE_PREPARES => false, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));

    $sql = "//my query";

    $query = $dbh->prepare($sql);
    $query->execute(array('//value','//value'));
    $query->setFetchMode(PDO::FETCH_ASSOC);

    while ($r = $query->fetch()):

        $var1 = $r['column1'];
        $var2 = $r['column2'];
        $var3 = $r['column3'];
        $var4 = $r['column4'];
        $var5 = $r['column5'];

    endwhile;

}

?>

<?php
include 'functions.php';

?>

<?php

try {

connectDB();
echo 'You are connected to Database';
echo $var1;
$dbh = null;

    }
catch(PDOException $e) {
        echo $e -> getMessage();
    }

?>