/**
* 读操作，获取满足条件的数据
* @param string $sql
* @param int $number
* @return array $result
*/
public function select($sql, $number)
{
try {
$statement = $this->_dbInstance->query($sql);
if (!$statement) {
throw new Exception("<br/>errorSQL:<b style='color:f00'>{$sql}</b><br/>\n");
}
if (1 == $number) {
$result = $statement->fetch(PDO::FETCH_ASSOC);
}
if ('' == $number) {
$result = $statement->fetchAll(PDO::FETCH_ASSOC);
}
if (1 < $number) {
$result = $statement->fetchAll(PDO::FETCH_ASSOC);
is_array($result) && array_splice($result, $number);
}
return $result;
} catch (PDOException $e) {
exit("<br/>error<br/>" . $e->getMessage());
}
return false;
}
