I see a lot of method/tutorial to connect multi database in CodeIgniter? Still far far away with me. Some one provide me to connect multi database in CI. This is my using way i was found it in a blog. pardon me, i don't recognize the blog address.
$active_group = 'default';
$active_record = TRUE;
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = 'root';
$db['default']['database'] = 'vk_global';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
//add alternate database settings
$db['wow']['hostname'] = 'localhost';
$db['wow']['username'] = 'root';
$db['wow']['password'] = 'root';
$db['wow']['database'] = 'auth';
$db['wow']['dbdriver'] = 'mysql';
$db['wow']['dbprefix'] = '';
$db['wow']['pconnect'] = TRUE;
$db['wow']['db_debug'] = TRUE;
$db['wow']['cache_on'] = FALSE;
$db['wow']['cachedir'] = '';
$db['wow']['char_set'] = 'utf8';
$db['wow']['dbcollat'] = 'utf8_general_ci';
$db['wow']['swap_pre'] = '';
$db['wow']['autoinit'] = TRUE;
$db['wow']['stricton'] = FALSE;
i was call it with this code
$DB2 = $this->load->database('auth',true);
and i was insert a simple row with this code
$this->$DB2->insert('events_grouptable',$data);
i got this error You have specified an invalid database connection group.
how should i solve this error?
$DB1 = $this->load->database('default', TRUE);
$DB2 = $this->load->database('wow', TRUE);
You need to set which db to use with which group otherwise the alternative does not work as
$active_group = 'default';
More details are here http://ellislab.com/codeigniter/user-guide/database/connecting.html
Related
Hello i have a dsn via odbc connection in my machine. When connect with pure php it´s work.
$_dsn= "informix:DSN=araucaria";
$pdo = new PDO($this->_dsn);
$pdo->setAttribute(3, 2);
How connect codeigniter 2 vía dsn ? My Database CI configuration like this
$db['default']['hostname'] = 'informix:DSN=araucaria';
$db['default']['username'] = 'xxxx';
$db['default']['password'] = 'xxxx';
$db['default']['database'] = '';
$db['default']['dbdriver'] = 'pdo';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
Help me please!
I'm developing PHP application with codigniter framework. And using amazon read replica setup. I need a way to handle all select query through read only DB and all update related query through master DB. Following is the current usage I use in my script.
database config file
$db['default']['hostname'] = 'master_db_host';
$db['default']['username'] = 'dbuser';
$db['default']['password'] = 'dbpassword';
$db['default']['database'] = 'db_name';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
model script
class replica_model extends CI_Model {
function __construct()
{
parent::__construct();
}
public function write($data)
{
$this->db->insert('dumy', $data);
return $this->db->insert_id();
}
public function read()
{
$query = $this->db->get("dumy");
return $query->result();
}
}
Can any one help me to alter the script to access master and replica based on read and write?
We can handle multiple DB with codeigniter. So first we can see how the config file need to be set.
$active_group = 'default';
$active_record = TRUE;
//Master DB config values
$db['default']['hostname'] = 'master_db_host';
$db['default']['username'] = 'db_user';
$db['default']['password'] = 'db_pass';
$db['default']['database'] = 'db_name';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
//Replica DB config values
$db['read_replica']['hostname'] = 'replica_db_host';
$db['read_replica']['username'] = 'db_user';
$db['read_replica']['password'] = 'db_password';
$db['read_replica']['database'] = 'db_name';
$db['read_replica']['dbdriver'] = 'mysql';
$db['read_replica']['dbprefix'] = '';
$db['read_replica']['pconnect'] = FALSE;
$db['read_replica']['db_debug'] = TRUE;
$db['read_replica']['cache_on'] = FALSE;
$db['read_replica']['cachedir'] = '';
$db['read_replica']['char_set'] = 'utf8';
$db['read_replica']['dbcollat'] = 'utf8_general_ci';
$db['read_replica']['swap_pre'] = '';
$db['read_replica']['autoinit'] = TRUE;
$db['read_replica']['stricton'] = FALSE;
Parameter "$db['read_replica']['pconnect']" should be true on master db config and it should be false on replica config. Other wise when we enable replica db master db config also overwritten by replica config.
Then model usage will be like follows.
class Replica_model extends CI_Model {
function __construct()
{
parent::__construct();
$this->db_replica = $this->load->database('read_replica',TRUE);
}
public function write($data)
{
$this->db->insert('dumy', $data);
return $this->db->insert_id();
}
public function read()
{
$query = $this->db_replica->get("dumy");
return $query->result();
}
}
CI allows you to connect to multiple databases via groups.
This is directly from their site:
https://ellislab.com/codeigniter/user-guide/database/connecting.html
$DB1 = $this->load->database('read', TRUE);
$DB2 = $this->load->database('write', TRUE);
hen you connect this way, you will use your object name to issue commands rather than the syntax used throughout this guide. In other words, rather than issuing commands with:
$this->db->query();
$this->db->result();
etc...
You will instead use:
$DB1->query();
$DB1->result();
etc...
In you will have a multi-dimensional array for your db
$db['read']['hostname'] = ...
$db['write']['hostname'] = ...
So when you read, you would use $DB1, when you write, you'd use $DB2 ...
I haven't used this exact setup. But that's the gist of it.
I am trying to connect oracle 11g with codeigniter(V-2.1.4) using xampp(v-1.7.3) . I have changed my config.php to this :
$active_group = 'default';
$active_record = TRUE;
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'system';
$db['default']['password'] = 'root';
$db['default']['database'] = 'orcl';
$db['default']['dbdriver'] = 'oci8';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
and also changed var $dbdriver = 'oci8'; in DB_driver.php file.
But um not able to connect with db. I am getting some sort of database error . It says :
Unable to connect to your database server using the provided settings.
Filename: G:\F\installed\Xampp\xampp\htdocs\codeigniter\system\database\DB_driver.php
Line Number: 124
I am giving line 118 - 127 of DB_driver.php here :
if ( ! $this->conn_id)
{
log_message('error', 'Unable to connect to the database');
if ($this->db_debug)
{
$this->display_error('db_unable_to_connect'); (this is line 124)
}
return FALSE;
}
I want to add that when i try to connect with the following code i am able to see "Succesfully connected with Oracle DB :-)" this message.
conn=oci_connect("system","root","localhost/orcl");
If (!$conn)
echo "Failed to connect to Oracle";
else
echo "Succesfully connected with Oracle DB :-)";
make your database file config as below
host will be IP whre the oracle is installed..
$db['default']['hostname'] = '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xxx.xx.xx)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = XYZ)))';
$db['default']['username'] = "USERNAME";
$db['default']['password'] = "PASSWORD";
$db['default']['database'] = "DATABASE";
$db['default']['dbdriver'] = "oci8";
$db['default']['dbprefix'] = "";
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = FALSE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = "";
$db['default']['char_set'] = "utf8";
$db['default']['dbcollat'] = "utf8_general_ci";
try this configuration :
$db['default']['hostname'] = 'localhost/orcl'; // orcl is instance name
$db['default']['username'] = 'system';
$db['default']['password'] = 'root';
$db['default']['database'] = '';
$db['default']['dbdriver'] = 'oci8';
and
$db['default']['db_debug'] = FALSE; // default TRUE
this work for me..
I have a script in my controller which is as follows:
if($this->db->query("CREATE DATABASE IF NOT EXISTS db_ecommerce"))
{
$sql=file_get_contents('./databse_backup/backup.sql');
foreach (explode(";\n", $sql) as $sql)
{
$sql = trim($sql);
//echo $sql.'<br/>============<br/>';
if($sql)
{
$this->db->query($sql);
}
}
}
It creates a database and then runs a backup sql file.
My issue is that we need to configure the config/database.php file beforehand.
First I want this script to run and after that the database.php file should be changed.
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'username';
$db['default']['password'] = 'password';
$db['default']['database'] = 'db_name';
Since its now for localhost hence,
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'db_name';
An approach would be to have 'template file' in your installation folder like:
ex. database.php
$active_group = 'default';
$active_record = TRUE;
$db['default']['hostname'] = '<?php echo $hostname;?>';
$db['default']['username'] = '<?php echo $username;?>';
$db['default']['password'] = '<?php echo $password;?>';
$db['default']['database'] = '<?php echo $database;?>';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '<?php echo $prefix;?>';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
and then you can get the values for db connection (from a form for example) and write the new file in your codeigniter application (application/config/database.php)
ex.
$settings['hostname'] = $this->input->post('hostname');
$settings['username'] = $this->input->post('username');
$settings['password'] = $this->input->post('password');
$settings['database'] = $this->input->post('database');
$settings['prefix'] = $this->input->post('prefix');
$file_contents = $this->load->view('templates/database', $settings, true);
write_file($_SERVER['DOCUMENT_ROOT'].'application/config/database.php', $file_contents);
I am trying to use a remote database for my codeigniter project (I am using WAMP).I get the following error when I try to bring up my controller page:
A Database Error Occurred Unable to connect to your database server using the provided settings. Filename:
C:\wamp\www\Naranpur\system\database\DB_driver.php Line Number: 124
These are my database file settings:
$db['default']['hostname'] = 'something.cs.something.edu';
$db['default']['port'] = '3306';
$db['default']['username'] = 'some_user';
$db['default']['password'] = 'some_pwd';
$db['default']['database'] = 'some_database';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = FALSE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = TRUE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'latin1';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
But when I try to access the database on my localhost with the following settings and give the same url, it works!
$db['default']['hostname'] = 'localhost';
$db['default']['port'] = '3306';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'test';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = FALSE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = TRUE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'latin1';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
Could someone please tell me where I might be going wrong?
I think that you need to give the user some_user the privilege to access your database.
from your phpmyadmin got to privilege tab and then edit the privilege for this user.
In the login information section set the host to your IP address or set it to % to allow this user to access from any host.
Can you access to something.cs.something.edu from a mysql client? (to check the connection)