class hmongodb { private $mongo; //mongodb连接
private $curr_db_name;
private $curr_table_name;
private $error;
public function getinstance($mongo_server, $flag=array())
{
static $mongodb_arr;
if (empty($flag['tag']))
{
$flag['tag'] = 'default'; }
if (isset($flag['force']) && $flag['force'] == true)
{
$mongo = new hmongodb($mongo_server);
if (empty($mongodb_arr[$flag['tag']]))
{
$mongodb_arr[$flag['tag']] = $mongo;
}
return $mongo;
}
else if (isset($mongodb_arr[$flag['tag']]) && is_resource($mongodb_arr[$flag['tag']]))
{
return $mongodb_arr[$flag['tag']];
}
else
{
$mongo = new hmongodb($mongo_server);
$mongodb_arr[$flag['tag']] = $mongo;
return $mongo;
}
}
/**
* 构造函数
* 支持传入多个mongo_server(1.一个出问题时连接其它的server 2.自动将查询均匀分发到不同server)
*
* 参数：
* $mongo_server:数组或字符串-array(127.0.0.1:1111, 127.0.0.1:2222)-127.0.0.1:1111
* $connect:初始化mongo对象时是否连接，默认连接
* $auto_balance:是否自动做负载均衡，默认是
*
* 返回值：
* 成功：mongo object
* 失败：false
*/
private function __construct($mongo_server, $connect=true, $auto_balance=true)
{
if (is_array($mongo_server))
{
$mongo_server_num = count($mongo_server);
if ($mongo_server_num > 1 && $auto_balance)
{
$prior_server_num = rand(1, $mongo_server_num);
$rand_keys = array_rand($mongo_server,$mongo_server_num);
$mongo_server_str = $mongo_server[$prior_server_num-1];
foreach ($rand_keys as $key)
{
if ($key != $prior_server_num - 1)
{
$mongo_server_str .= ',' . $mongo_server[$key];
}
}
}
else
{
$mongo_server_str = implode(',', $mongo_server);
} }
else
{
$mongo_server_str = $mongo_server;
}
try {
$this->mongo = new mongo($mongo_server, array('connect'=>$connect));
}
catch (mongoconnectionexception $e)
{
$this->error = $e->getmessage();
return false;
}
}
/**
* 连接mongodb server
*
* 参数：无
*
* 返回值：
* 成功：true
* 失败：false
*/
public function connect()
{
try {
$this->mongo->connect();
return true;
}
catch (mongoconnectionexception $e)
{
$this->error = $e->getmessage();
return false;
}
}
/**
* select db
*
* 参数：$dbname
*
* 返回值：无
*/
public function selectdb($dbname)
{
$this->curr_db_name = $dbname;
}
/**
* 创建索引：如索引已存在，则返回。
*
* 参数：
* $table_name:表名
* $index:索引-array(id=>1)-在id字段建立升序索引
* $index_param:其它条件-是否唯一索引等
*
* 返回值：
* 成功：true
* 失败：false
*/
public function ensureindex($table_name, $index, $index_param=array())
{
$dbname = $this->curr_db_name;
$index_param['safe'] = 1;
try {
$this->mongo->$dbname->$table_name->ensureindex($index, $index_param);
return true;
}
catch (mongocursorexception $e)
{
$this->error = $e->getmessage();
return false;
}
}
/**
* 插入记录
*
* 参数：
* $table_name:表名
* $record:记录
*
* 返回值：
* 成功：true
* 失败：false
*/
public function insert($table_name, $record)
{
$dbname = $this->curr_db_name;
try {
$this->mongo->$dbname->$table_name->insert($record, array('safe'=>true));
return true;
}
catch (mongocursorexception $e)
{
$this->error = $e->getmessage();
return false;
}
}
/**
* 查询表的记录数
*
* 参数：
* $table_name:表名
*
* 返回值：表的记录数
*/
public function count($table_name)
{
$dbname = $this->curr_db_name;
return $this->mongo->$dbname->$table_name->count();
}
/**
* 更新记录
*
* 参数：
* $table_name:表名
* $condition:更新条件
* $newdata:新的数据记录
* $options:更新选择-upsert/multiple
*
* 返回值：
* 成功：true
* 失败：false
*/
public function update($table_name, $condition, $newdata, $options=array())
{
$dbname = $this->curr_db_name;
$options['safe'] = 1;
if (!isset($options['multiple']))
{
$options['multiple'] = 0; }
try {
$this->mongo->$dbname->$table_name->update($condition, $newdata, $options);
return true;
}
catch (mongocursorexception $e)
{
$this->error = $e->getmessage();
return false;
}
}
/**
* 删除记录
*
* 参数：
* $table_name:表名
* $condition:删除条件
* $options:删除选择-justone
*
* 返回值：
* 成功：true
* 失败：false
*/
public function remove($table_name, $condition, $options=array())
{
$dbname = $this->curr_db_name;
$options['safe'] = 1;
try {
$this->mongo->$dbname->$table_name->remove($condition, $options);
return true;
}
catch (mongocursorexception $e)
{
$this->error = $e->getmessage();
return false;
} }
/**
* 查找记录
*
* 参数：
* $table_name:表名
* $query_condition:字段查找条件
* $result_condition:查询结果限制条件-limit/sort等
* $fields:获取字段
*
* 返回值：
* 成功：记录集
* 失败：false
*/
public function find($table_name, $query_condition, $result_condition=array(), $fields=array())
{
$dbname = $this->curr_db_name;
$cursor = $this->mongo->$dbname->$table_name->find($query_condition, $fields);
if (!empty($result_condition['start']))
{
$cursor->skip($result_condition['start']);
}
if (!empty($result_condition['limit']))
{
$cursor->limit($result_condition['limit']);
}
if (!empty($result_condition['sort']))
{
$cursor->sort($result_condition['sort']);
}
$result = array();
try {
while ($cursor->hasnext())
{
$result[] = $cursor->getnext();
}
}
catch (mongoconnectionexception $e)
{
$this->error = $e->getmessage();
return false;
}
catch (mongocursortimeoutexception $e)
{
$this->error = $e->getmessage();
return false;
}
return $result;
}
/**
* 查找一条记录
*
* 参数：
* $table_name:表名
* $condition:查找条件
* $fields:获取字段
*
* 返回值：
* 成功：一条记录
* 失败：false
*/
public function findone($table_name, $condition, $fields=array())
{
$dbname = $this->curr_db_name;
return $this->mongo->$dbname->$table_name->findone($condition, $fields);
}
/**
* 获取当前错误信息
*
* 参数：无
*
* 返回值：当前错误信息
*/
public function geterror()
{
return $this->error;
}
/*** mongodb类** examples:
* $mongo = new hmongodb(127.0.0.1:11223);
* $mongo->selectdb(test_db);
* 创建索引
* $mongo->ensureindex(test_table, array(id=>1), array('unique'=>true));
* 获取表的记录
* $mongo->count(test_table);
* 插入记录
* $mongo->insert(test_table, array(id=>2, title=>asdqw));
* 更新记录
* $mongo->update(test_table, array(id=>1),array(id=>1,title=>bbb));
* 更新记录-存在时更新，不存在时添加-相当于set
* $mongo->update(test_table, array(id=>1),array(id=>1,title=>bbb),array(upsert=>1));
* 查找记录
* $mongo->find(c, array(title=>asdqw), array(start=>2,limit=>2,sort=>array(id=>1)))
* 查找一条记录
* $mongo->findone($mongo->findone(ttt, array(id=>1)), array(id=>1));
* 删除记录
* $mongo->remove(ttt, array(title=>bbb));
* 仅删除一条记录
* $mongo->remove(ttt, array(title=>bbb), array(justone=>1));
* 获取mongo操作的错误信息
* $mongo->geterror();
*/
}
http://www.bkjia.com/phpjc/769236.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/769236.htmltecharticle复制代码 代码如下: class hmongodb { private $mongo; //mongodb连接 private $curr_db_name; private $curr_table_name; private $error; public function getinstance($mongo_serv...