Iezon Driver Wrapper

<?php

class Logger {

    private static $location;

    public function __construct() {
        self::$location = 'some/dir/file.txt';
    }

    public static function write($msg) {
        $current = file_get_contents(self::$location);
        file_put_contents($current . '\n' . $msg, $current);
        return $this;
    }

}

class Driver_Controller {

    const Api           = 'Pdo';
    const Author        = 'Kyle';
    const Description   = 'Container wrapper for Database Api';

    const Write         = 1;
    const Read          = 2;
    const Update        = 4;
    const Delete        = 8;

    protected $_sql;
    private $_api;

    public function __construct($dsn,$user,$pass) { try {
        $this->_api = parent::__construct($dsn,$user,$pass);
        $this->_api->setAttribute(PDO::ERR_MODE, PDO::ERR_EXCEPTION);
    } catch(PDOException $e) { Logger::write($e->getMessage()); } }

    protected function getInstance() {
        return $this->_api->Prepare($this->_sql);
    }

}

class Iezon_Controller extends Driver_Controller {

    public function __construct($dsn,$user,$pass) {
        parent::__construct($dsn,$user,$pass);
    }

    public function simple_select($table, $cols = []) {
        $this->_sql = 'SELECT ' . implode(',', $cols);
        return $this;
    }

    public function where($cols = []) {
        $cs = '';
        $i = 0;
        $len = count($cols);
        foreach($cols as $k => $v) {
            $cs .= $v . ' = ? ' . ($i == $len -1) ? $k . ' ' : '';
        }
        $this->_sql .= " WHERE $cs";
        return $this;
    }

    public function bind($vals = []) {
        return $this->getInstance()->execute($vals);
    }

}

/**
 * Wrapper only covers SELECT & WHERE
 **/

$dsn = 'mysql:host=localhost;dbname=some_db';
$usr = 'user';
$pas = 'password';

$ic = new Iezon_Controller($dsn,$usr,$pas);

$ic->simple_select('table', ['*'])
    ->where(['AND' => 'user_id', 'created_by'])
    ->bind(['someId', 'someUser'])
    ->fetch();