ZPF MySQL database layer multi-instance implementation

March 31, 2015 18:27:34

Scenario: A request may be linked to a number of different databases, such as Master and slave, in order to avoid repeating the connect database, you can save the linked database objects

The next time it's called, just take it out and use it.

Realize:

1 classMySQLdb2 {3     //Multi-Host instance4     Private Static $instance=Array();5     //Connection6      Public $link=NULL;7     8      Public $_database= ";//Current database name9      Public $_tablename= ";//table name of the current tableTen      Public $_dt= ";//Database.tablename One      A      - //If the host is not changed and a MySQL connection already exists, no new connections will be created - //If the host changes, it is regenerated into an instance to create a connection the      Public Static functionGetInstance ($host,$username,$password,$database,$tablename) -     { -         if(Empty(Self::$instance[$host])) { -             $RC=NewReflectionclass (' MySQLdb '); +Self::$instance[$host] =$RC->newinstanceargs (Array($host,$username,$password,$database,$tablename)); -         } +  A         returnSelf::$instance[$host]; at     } -      -      Public function__construct ($host,$username,$password,$database,$tablename) -     { -         $this->link =NewMysqli ($host,$username,$password); -         if($this->link->connect_error) { in             Echo $this->link->connect_error, ' <br> '; -             Exit; to         } +         $this->_database =$database;//Database name -         $this->_tablename =$tablename;//Table name the         $this->_dt = "' {$this->_database} '. ' {$this->_tablename} ' "; *  $         $this->link->query ("Set Names UTF8");Panax Notoginseng     } -}

Note: Implemented with the reflection feature, the constructor is public

How to use:

1      Public functionTestmysqls ()2     {3         $obj 1=$this->getlink (' Tiezi ');4         $obj 2=$this->getlink (' name ');5 6         $arr 1=$obj 1->select (', ', ', ', 1);7         $arr 2=$obj 2->select (', ', ', ', 1);8         Var_dump($arr 1,$arr 2);9}

ZPF MySQL database layer multi-instance implementation