Simple PDO Wrapper

Connection.php

<?php

namespace App\Database;

use \PDO;

class Connection
{
    private $conn;
    private $database;
    private $stmt;

    public function __construct($host, $database, $username, $password)
    {
        // Set DSN
        $dsn = 'mysql:host=' . $host . ';dbname=' . $database;
        // Set options
        $options = array(
            PDO::ATTR_PERSISTENT => true,
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        );
        // Create a new PDO instanace
        try {
            $this->conn = new PDO($dsn, $username, $password, $options);
        } catch (PDOException $e) {
            $this->error = $e->getMessage();
        }
    }

    public function query($query)
    {
        $this->stmt = $this->conn->prepare($query);
        return $this;
    }

    public function bind($param, $value, $type = null)
    {
        if (is_null($type)) {
            switch (true) {
                case is_int($value):
                    $type = PDO::PARAM_INT;
                    break;
                case is_bool($value):
                    $type = PDO::PARAM_BOOL;
                    break;
                case is_null($value):
                    $type = PDO::PARAM_NULL;
                    break;
                default:
                    $type = PDO::PARAM_STR;
            }
        }
        $this->stmt->bindValue($param, $value, $type);
        return $this;
    }

    public function execute()
    {
        return $this->stmt->execute();
    }

    public function resultset()
    {
        $this->execute();
        return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
    }

    public function single()
    {
        $this->execute();
        return $this->stmt->fetch(PDO::FETCH_ASSOC);
    }

    public function rowCount()
    {
        return $this->stmt->rowCount();
    }

    public function lastInsertId()
    {
        return $this->conn->lastInsertId();
    }

    public function beginTransaction()
    {
        return $this->conn->beginTransaction();
    }

    public function endTransaction()
    {
        return $this->conn->commit();
    }

    public function cancelTransaction()
    {
        return $this->conn->rollBack();
    }

    public function debugDumpParams()
    {
        return $this->stmt->debugDumpParams();
    }
}

Usage

use App\Database\Connection;

$connection = new Connection('127.0.0.1', 'database_name', 'db_user', 'db_password');

$result = $connection->query('select * from tasks')->resultset();

foreach ($result as $key => $value) {
    echo '<p>' . $value['title'] . '</p>';
}

Sample Output

<p>some title</p>
<p>some title 2</p>