我正在使用this php pdo wrapper。这是我的数据库类。
class Db
{
private static $_pdoObject = null;
protected static $_fetchMode = PDO::FETCH_ASSOC;
protected static $_connectionStr = null;
protected static $_driverOptions = array();
private static $_username = null;
private static $_password = null;
public static function setConnectionInfo($schema, $username = null, $password = null, $database = 'mysql', $hostname = 'localhost')
{
if($database == 'mysql') {
self::$_connectionStr = "mysql:dbname=$schema;host=$hostname";
self::$_username = $username;
self::$_password = $password;
} else if($database == 'sqlite'){
// For sqlite, $schema is the file path
self::$_connectionStr = "sqlite:$schema";
}
// Making the connection blank
// Will connect with provided info on next query execution
self::$_pdoObject = null;
}
public static function getResult($sql, $params = array())
{
$statement = self::_query($sql, $params);
return $statement->fetchAll(self::$_fetchMode);
}
private static function _query($sql, $params = array())
{
if(self::$_pdoObject == null) {
self::_connect();
}
$statement = self::$_pdoObject->prepare($sql, self::$_driverOptions);
$arrayjson1=array(
'success' => false,
'message'=>'database error '
);
$msg= formjson(array(),array(),$arrayjson1);
if (! $statement) {
$errorInfo = self::$_pdoObject->errorInfo();
//~ print_r($errorInfo);
//~ echo $msg;exit;
throw new PDOException("Database error [{$errorInfo[0]}]: {$errorInfo[2]}, driver error code is $errorInfo[1]");
}
$paramsConverted = (is_array($params) ? ($params) : (array ($params )));
if ((! $statement->execute($paramsConverted)) || ($statement->errorCode() != '00000')) {
$errorInfo = $statement->errorInfo();
//~ print_r($errorInfo);
throw new PDOException("Database error [{$errorInfo[0]}]: {$errorInfo[2]}, driver error code is $errorInfo[1]");
//~ echo $msg;exit;
}
return $statement;
}
}
我正在调用此查询以获取所有用户
$sql="select userid,concat_ws(' ',firstname,lastname) as name $fields
from users where 1=1 $condition order by updatedon $limit";
$row=Db::getResult($sql,$query);
我希望通过
输入
传递
- 否。每页记录数 2.页面编号
醇>
这样它
输出
来应该是每页记录的页面记录。
我如何在pdo中实现这一目标。
请帮忙。谢谢