php - Using multiple mysql connections in 1 class -


i writing cronjob transfer data 1 table, process , apply web application. have 2 seperate database connections this. @ moment, connection credentials same except it's different databases, going live, entirely seperated.

the issue creating connection assigning in class $this->staging , other called $this->production. use mysql_ping ensure both connections working.

what appears happen when query, disregards connection identifier ($this->staging example) , tries query on last of 2 connections created.

i use connection identifier within query:

 // connection:   $this->staging = $this->mysql($config['staging']);  $this->production = $this->mysql($config['production']);   $sql = "select * table";  $query = mysql_query($sql,$this->staging);   // returns unknown table in database defined in $this->production.

i return mysql_connect $this->mysql() method, , not mysql_select_db(). if try returning mysql_select_db() mysql_ping not work.

here mysql() method:

// connect(): connect database (mysql):  private function mysql($cred) {     $connect = mysql_connect($cred['server'],$cred['username'],$cred['password']);     if($connect) {         $db = mysql_select_db($cred['database']);         if($db) {             return $connect;         } else {             $this->informer("[fatal]","could not make mysql database connection on server ".$_server['server_addr']." database: ".$cred['database']);         }     } else {         $this->informer("[fatal]","the database credentials appears wrong. ".$_server['server_addr']." mysql database: ".$cred['database']);     } }

the problem happens because connecting same mysql server, when connect staging (second connection) php returns same connection created production , don't create new one, force php create new 1 should change "mysql_connect" call this:

 $connect = mysql_connect($cred['server'],$cred['username'],$cred['password'], true);

this force php start new connection.

ref: http://www.php.net/mysql_connect


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