Mongodb operations implemented by php

Mongodb operations implemented by php

Speaking of php connection to mongoDB, I have to first introduce the official php manual.

Pai_db.php

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<? Php   /** * Created by PhpStorm. * User: yangyulong * Date: 2015/5/26 * Time: 13: 45 */ Class pai_db { Private static $ instanceof = NULL; Public $ mongo; Private $ host = 'localhost '; Private $ port = '000000 ';   Private $ db; Public $ dbname; Private $ table = NULL;   /** * Initialize the class to obtain the mongo instance object. */ Public function _ construct ($ host = NULL, $ port = NULL, $ dbname = NULL, $ table = NULL) {   If (NULL ===$ dbname ){ $ This-> throwError ('set cannot be blank! '); }   // Determine whether the host and port are passed If (NULL! ==$ Host ){ $ This-> host = $ host; }   If (NULL! ==$ Port ){ $ This-> port = $ port; }   $ This-> table = $ table;   $ This-> mongo = new MongoClient ($ this-> host. ':'. $ this-> port ); If ($ this-> getVersion ()> = '0. 9.0 '){ $ This-> dbname = $ this-> mongo-> selectDB ($ dbname ); $ This-> db = $ this-> dbname-> selectCollection ($ table ); } Else { $ This-> db = $ this-> mongo-> $ dbname-> $ table; } }   Public function getVersion () { Return response client: VERSION; }   /** * Singleton Mode * @ Return Mongo | null */ // Public static function getInstance ($ host = null, $ port = null, $ dbname = null, $ table = null ){ // // If (! (Self: $ instanceof self )){ // Self: $ instanceof = new self ($ host, $ port, $ dbname, $ table ); //} // // Return self: $ instanceof; //}   /** * Insert a data entry * @ Param array $ doc */ Public function insert ($ doc = array ()) { If (empty ($ doc )){ $ This-> throwError ('the inserted data cannot be blank! '); } // Save data information Try { If (! $ This-> db-> insert ($ doc )){ Throw new partition exception ('data insertion failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } }   /** * Insert multiple data records * @ Param array $ doc */ Public function insertMulti ($ doc = array ()) { If (empty ($ doc )){ $ This-> throwError ('the inserted data cannot be blank! '); } // Insert data information Foreach ($ doc as $ key => $ val ){ // Judge whether $ val is an array. If (is_array ($ val )){ $ This-> insert ($ val ); } } }   /** * Search for a record * @ Return array | null */ Public function findOne ($ where = NULL) { If (NULL ===$ where ){ Try { If ($ result = $ this-> db-> findOne ()){ Return $ result; } Else { Throw new parse exception ('data query failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } } Else { Try { If ($ result = $ this-> db-> findOne ($ where )){ Return $ result; } Else { Throw new parse exception ('data query failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } }   }   /** * Perform subsequent operations with todo Conditions * Search for all documents * @ Return cursor */ Public function find ($ where = NULL) { If (NULL ===$ where ){   Try { If ($ result = $ this-> db-> find ()){   } Else { Throw new parse exception ('data query failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } } Else { Try { If ($ result = $ this-> db-> find ($ where )){   } Else { Throw new parse exception ('data query failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } }   $ Arr = array (); Foreach ($ result as $ id => $ val ){ $ Arr [] = $ val; }   Return $ arr; }   /** * Retrieve the number of records * @ Return int */ Public function getCount () { Try { If ($ count = $ this-> db-> count ()){ Return $ count; } Else { Throw new except exception ('total lookup failed '); } } Catch (except exception $ e ){ $ This-> throwError ($ e-> getMessage ()); } }   /** * Retrieve all databases * @ Return array */ Public function getDbs () { Return $ this-> mongo-> listDBs (); }   /** * Deleting a database * @ Param null $ dbname * @ Return mixed */ Public function dropDb ($ dbname = NULL) { If (NULL! ==$ Dbname ){ $ Retult = $ this-> mongo-> dropDB ($ dbname ); If ($ retult ['OK']) { Return TRUE; } Else { Return FALSE; } } $ This-> throwError ('Enter the name of the database to be deleted '); }   /** * Forcibly close the database link */ Public function closeDb () { $ This-> mongo-> close (TRUE ); }   /** * Output error message * @ Param $ errorInfo error content */ Public function throwError ($ errorInfo = '') { Echo " Die (); }   }

The above is all the content of this article. I hope you will like it.