Запросы INSERT и UPDATE на PDO

// 'modx_table_name', array('row1' => 1, 'row2' =>2)
function _INSERT($table, $data){
	$keys = array_keys($data);
	$fields = '`' . implode('`,`', $keys) . '`';
	$placeholders = substr(str_repeat('?,', count($keys)), 0, -1);
	$sql = "INSERT INTO {$table} ({$fields}) VALUES ({$placeholders});";
	$stmt = $this->modx->prepare($sql);
	if (!$stmt->execute(array_values($data))) {
		$this->modx->log(1, print_r($stmt->errorInfo(), true) . ' SQL: ' . $sql);
	}
}

// 'modx_table_name', array('row1' => 1, 'row2' => 2), 'id', 1
function _UPDATE($table, $data, $key, $val){
	if(!$key || !$val) return false;
	$placeholders = array();
	foreach(array_keys($data) as $k) $placeholders[] = "`{$k}` =?";
	$placeholders = implode(', ', $placeholders);
	$data = array_values($data);
	array_push($data,$val);
	$sql = "UPDATE {$table} SET {$placeholders} WHERE `{$key}` =?;";
	$stmt = $this->modx->prepare($sql);
	if (!$stmt->execute(array_values($data))) {
		$this->modx->log(1, print_r($stmt->errorInfo(), true) . ' SQL: ' . $sql);
	}
}