php mongodb操作类 带几个简单的例子

2018-09-21 16:38

阅读:448

  之前脚本之家已经发过几篇类似的文章,大家可以参考一下。

  核心代码:

   class NewMongodb { private $mongo; //NewMongodb连接 private $curr_db_name; private $curr_table_name; private $error; public $config; public function getInstance($mongo_server, $flag=array()) { static $NewMongodb_arr; if (empty($flag[tag])) { $flag[tag] = default; } if (isset($flag[force]) && $flag[force] == true) { $mongo = new NewMongodb($mongo_server); if (empty($NewMongodb_arr[$flag[tag]])) { $NewMongodb_arr[$flag[tag]] = $mongo; } return $mongo; } else if (isset($NewMongodb_arr[$flag[tag]]) && is_resource($NewMongodb_arr[$flag[tag]])) { return $NewMongodb_arr[$flag[tag]]; } else { $mongo = new NewMongodb($mongo_server); $NewMongodb_arr[$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 * $auto_balance:是否自动做负载均衡,默认是 * * 返回值: * 成功:mongo object * 失败:false */ public function __construct($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 { $this->mongo = new MongoClient($mongo_server, array(connect=>$connect)); } catch (MongoConnectionException $e) { $this->error = $e->getMessage(); return false; } } /** * 连接NewMongodb 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; } /*** NewMongodb类** examples: * $mongo = new NewMongodb(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(); */ }


评论


亲,登录后才可以留言!