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本篇內容介紹了“php mongodb操作類的用法”的有關知識,在實際案例的操作過程中,不少人都會遇到這樣的困境,接下來就讓小編帶領大家學習一下如何處理這些情況吧!希望大家仔細閱讀,能夠學有所成!
之前億速云已經發過幾篇類似的文章,大家可以參考一下。
核心代碼:
class NewMongodb { private $mongo; //NewMongodb連接 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; } } /** * 構造函數 * 支持傳入多個mongo_server(1.一個出問題時連接其它的server 2.自動將查詢均勻分發到不同server) * * 參數: * $mongo_server:數組或字符串-array("127.0.0.1:1111", "127.0.0.1:2222")-"127.0.0.1:1111" * $connect:初始化mongo對象時是否連接,默認連接 * $auto_balance:是否自動做負載均衡,默認是 * * 返回值: * 成功:mongo object * 失敗:false */ public function __construct($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; } } /** * 連接NewMongodb server * * 參數:無 * * 返回值: * 成功:true * 失敗:false */ public function connect() { try { $this->mongo->connect(); return true; } catch (MongoConnectionException $e) { $this->error = $e->getMessage(); return false; } } /** * select db * * 參數:$dbname * * 返回值:無 */ public function selectDb($dbname) { $this->curr_db_name = $dbname; } /** * 創建索引:如索引已存在,則返回。 * * 參數: * $table_name:表名 * $index:索引-array("id"=>1)-在id字段建立升序索引 * $index_param:其它條件-是否唯一索引等 * * 返回值: * 成功:true * 失敗:false */ public function ensureIndex($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; } } /** * 插入記錄 * * 參數: * $table_name:表名 * $record:記錄 * * 返回值: * 成功:true * 失敗:false */ public function insert($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; } } /** * 查詢表的記錄數 * * 參數: * $table_name:表名 * * 返回值:表的記錄數 */ public function count($table_name) { $dbname = $this->curr_db_name; return $this->mongo->$dbname->$table_name->count(); } /** * 更新記錄 * * 參數: * $table_name:表名 * $condition:更新條件 * $newdata:新的數據記錄 * $options:更新選擇-upsert/multiple * * 返回值: * 成功:true * 失敗:false */ public function update($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; } } /** * 刪除記錄 * * 參數: * $table_name:表名 * $condition:刪除條件 * $options:刪除選擇-justOne * * 返回值: * 成功:true * 失敗:false */ public function remove($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; } } /** * 查找記錄 * * 參數: * $table_name:表名 * $query_condition:字段查找條件 * $result_condition:查詢結果限制條件-limit/sort等 * $fields:獲取字段 * * 返回值: * 成功:記錄集 * 失敗:false */ public function find($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; } /** * 查找一條記錄 * * 參數: * $table_name:表名 * $condition:查找條件 * $fields:獲取字段 * * 返回值: * 成功:一條記錄 * 失敗:false */ public function findOne($table_name, $condition, $fields=array()) { $dbname = $this->curr_db_name; return $this->mongo->$dbname->$table_name->findOne($condition, $fields); } /** * 獲取當前錯誤信息 * * 參數:無 * * 返回值:當前錯誤信息 */ public function getError() { return $this->error; } /*** NewMongodb類** examples: * $mongo = new NewMongodb("127.0.0.1:11223"); * $mongo->selectDb("test_db"); * 創建索引 * $mongo->ensureIndex("test_table", array("id"=>1), array('unique'=>true)); * 獲取表的記錄 * $mongo->count("test_table"); * 插入記錄 * $mongo->insert("test_table", array("id"=>2, "title"=>"asdqw")); * 更新記錄 * $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb")); * 更新記錄-存在時更新,不存在時添加-相當于set * $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb"),array("upsert"=>1)); * 查找記錄 * $mongo->find("c", array("title"=>"asdqw"), array("start"=>2,"limit"=>2,"sort"=>array("id"=>1))) * 查找一條記錄 * $mongo->findOne("$mongo->findOne("ttt", array("id"=>1))", array("id"=>1)); * 刪除記錄 * $mongo->remove("ttt", array("title"=>"bbb")); * 僅刪除一條記錄 * $mongo->remove("ttt", array("title"=>"bbb"), array("justOne"=>1)); * 獲取Mongo操作的錯誤信息 * $mongo->getError(); */ }
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