PHP PDO helper class

gistfile1.aw

class PDOwrapper {

	//
	// VARIABLES
	private $db = array(
		'host' => null,
		'name' => null,
		'user' => null,
		'pass' => null,
		'pdo' => null
	);
	public $pdo;

	//
	// CONFIG
	private function buildPDO() {
		$this->pdo = new PDO( 
			'mysql:host=' . $this->db[ 'host' ] . ';' .
			'dbname=' . $this->db[ 'name' ], 
			$this->db[ 'user' ], 
			$this->db[ 'pass' ] 
		);
	}
	function __construct( $host, $name, $user, $pass ) {
		$this->db[ 'host' ] = $host;
		$this->db[ 'name' ] = $name;
		$this->db[ 'user' ] = $user;
		$this->db[ 'pass' ] = $pass;
		$this->buildPDO();
	}
	public function setConfig( $args ) {
		$keys = array_keys( $db );
		foreach ( $keys as $key ) if ( isset( $args[ $key ] ) ) $this->db[ $key ] = $args[ $key ];
		$this->buildPDO();
	}

	//
	// INSERT
	private function insert( $table, $columns, $rowdicts ) {
		// columns = array of row columns
		// rowdicts = array of dictionaries
		$placeholders = '';
		foreach ($columns as $column) $placeholders = $placeholders . $column . ' = ?, ';
		$placeholders = substr( $placeholders, 0, -2 );
		$stmt = $this->pdo->prepare( 'INSERT INTO ' . $table . ' SET ' . $placeholders );
		foreach( $rowdicts as $rowdict ) {
			$vcount = 0;
			foreach( $rowdict as $value ) {
				$vcount++;
				$stmt->bindValue( $vcount, $value );
			}
			$stmt->execute();
		}
	}
	public function insertRows( $table, $rowdicts ) {
		$columns = array_keys( $rowdicts[ 0 ] );
		$this->insert( $table, $columns, $rowdicts );
	}
	public function insertRow( $table, $rowdict ) {
		$columns = array_keys( $rowdict );
		$this->insert( $table, $columns, array( $rowdict ) );
	}

}

$db = new PDOwrapper( 'localhost', 'practice','root','root' );

$db->insertRow( 'Posts', array( 'title' => 'FINGERS CROSSED', 'content' => 'HMMMMMMMMMM' ) );
$db->insertRows( 'Posts', array(
	array( 'title' => 'FINGERS CROSSED AGAIN', 'content' => 'HRMMM' ),
	array( 'title' => 'OH BOY GOSH', 'content' => 'GEEEEEEEEE' ),
	array( 'title' => 'I LIKE TURTLES', 'content' => 'TEE HEEEEEEEE' )
) );