<?php

class QueryBuilder
{
    protected $pdo;

    public function __construct($pdo)
    {
        $this->pdo = $pdo;
    }

    public function selectAll($table, $intoClass)
    {
        $statement = $this->pdo->prepare("select * from {$table}");
        $statement->execute();
        return $statement->fetchAll(PDO::FETCH_CLASS, $intoClass);
    }

    public function insert($table, $data)
    {
        $sql = sprintf(
            'insert into %s (%s) values (%s)',
            $table,
            implode(', ', array_keys($data)),
            ':' . implode(', :', array_keys($data))
        );

        $statment = $this->pdo->prepare($sql);
        $statment->execute($data);
    }
}