banco.php

<?php
//banco.php

class Banco{

	private $pdo;
	private $numRows;
	private $array;


	public function __construct($host, $dbname, $dbuser, $dbpass){

		try {
			$this->pdo = new PDO("mysql:dbname=".$dbname.";host=".$host, $dbuser, $dbpass);
		} catch (PDOException $e) {
			echo "Falha ao conectar = ". $e->getMessage();
		}
	}

	public function query($sql){
		$query = $this->pdo->query($sql);
		$this->numRows = $query->rowCount();
		$this->array = $query->fetchAll();
	}

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

	public function result(){
		return $this->array;
	}

	public function insert($table, $data) {
            if(!empty($table) && (is_array($data) && count($data) > 0)):
                $sql = "INSERT INTO ".$table." SET ";
                $dados = array();
                foreach ($data as $chave => $valor):
                    $dados[] = $chave." = '".addslashes($valor)."'";
                endforeach;
                $sql .= implode(", ", $dados);
                var_dump($dados);
            endif;
                $this->pdo->query($sql);
        }
}