CI (CodeIgniter) setting enhanced configuration class instance, cicodeigniter_php tutorial

CI (CodeIgniter) setting enhanced configuration class instance, Cicodeigniter

This example describes the setting enhanced configuration class for CodeIgniter. Share to everyone for your reference, as follows:

The enhanced configuration class is suitable for items that require more flexible configuration items. It can implement pre-load configuration, group configuration, single tune, add, delete, change configuration without changing config document.

Use:

where it's needed.
Copy the Code code as follows: $this->load->library (' setting ');
For pre-add-ons You can use the copy code code as follows: $this->config->item (); get
You can use the copy code code for a temporary fetch entry as follows: $this->setting->item (); get

First, create a data table

CREATE TABLE ' system_settings ' (' id ' int (one) unsigned not null auto_increment, ' key ' varchar ($) ' NOT null DEFAULT ' ', ' VA  Lue ' mediumtext not NULL, ' group ' varchar (ON) NOT null default ' site ', ' AutoLoad ' enum (' No ', ' yes ') ' and ' not ' null default ' Yes ', PRIMARY key (' id ', ' key '), key ' name ' (' key '), key ' AutoLoad ' (' AutoLoad ')) Engine=myisam auto_increment=11 DEFAULT Charse T=utf8;

Then create setting.php under the Application/libraries directory, as follows

<?phpif (!defined (' BasePath ')) exit (' No Direct script access allowed '); class Setting {private $_ci;  Private $settings _autoloaded;  Private $settings = Array ();  Private $settings _group = Array ();  Private $settings _db;    Public Function __construct () {$this->_ci = &get_instance ();    $this->settings_db = $this->_ci->config->item (' settings_table ');  $this->autoload (); }//------------------------------------------------------------------------//Ornate Split line officially started//--------------------- ---------------------------------------------------/** * Get all auto-loaded settings from the database */Public Function AutoLoad () {//if present    return directly if (!empty ($this->settings)) {return $this->settings;    }//If the system does not exist the data table returns False if (! $this->_ci->db->table_exists ($this->settings_db)) {return false; }//The query marked as an automatically loaded item $this->_ci->db->select (' Key,value ')->from ($this->settings_db)->where ('    AutoLoad ', ' yes '); $query = $this->_ci-&Gt;db->get ();    if ($query->num_rows () = = 0) {return FALSE; }//Cyclic write system configuration foreach ($query->result () as $k = = $row) {$this->settings[$row->key] = $row->value      ;    $this->_ci->config->set_item ($row->key, $row->value);    }//Mark session, avoid duplicate read library//$this->_ci->session->set_userdata (' settings_autoloaded ', TRUE);  return $this->settings;  }//------------------------------------------------------------------------/** * Get a single setting * * * <?php $this->settings->get (' Config_item '); ?> *    */Public Function item ($key) {if (! $key) {return FALSE;    }//First check if the system has automatically loaded if (Isset ($this->settings[$key]) {return $this->settings[$key];    }//Query database $this->_ci->db->select (' value ')->from ($this->settings_db)->where (' key ', $key);    $query = $this->_ci->db->get ();      if ($query->num_rows () > 0) {$row = $query->row ();      $this->settings[$key] = $row->value;    return $row->value;  }//The query does not reach the result to find the System config, return value or False return $this->_ci->config->item ($key); }//------------------------------------------------------------------------/** * Get Group configuration */Public function Group (    $group = ') {if (! $group) {return FALSE;    } $this->_ci->db->select (' Key,value ')->from ($this->settings_db)->where (' group ', $group);    $query = $this->_ci->db->get ();    if ($query->num_rows () = = 0) {return FALSE; } foreach ($query->result () as$k = $row) {$this->settings[$row->key] = $row->value;    $arr [$row->key] = $row->value;  } return $arr; }//------------------------------------------------------------------------/** * Change settings */Public function edit ($k    EY, $value) {$this->_ci->db->where (' key ', $key);    $this->_ci->db->update ($this->settings_db, Array (' value ' = = $value));    if ($this->_ci->db->affected_rows () = = 0) {return FALSE;  } return TRUE; }//------------------------------------------------------------------------/** * New settings */Public Function Insert ( $key, $value = ', $group = ' addon ', $autoload = ' no ') {//check if the setting has been added $this->_ci->db->select (' value ')-&G    T;from ($this->settings_db)->where (' key ', $key);    $query = $this->_ci->db->get ();    if ($query->num_rows () > 0) {return $this->edit ($key, $value); } $data = Array (' key ' = = $key, ' value ' = = $value, ' group ' => $group, ' autoload ' = $autoload,);    $this->_ci->db->insert ($this->settings_db, $data);    if ($this->_ci->db->affected_rows () = = 0) {return FALSE;  } return TRUE; }//------------------------------------------------------------------------/** * Delete settings */Public Function Delete (    $key) {$this->_ci->db->delete ($this->settings_db, Array (' key ' = $key));    if ($this->_ci->db->affected_rows () = = 0) {return FALSE;  } return TRUE; }//------------------------------------------------------------------------/** * Delete settings group and member configuration */Public function D    Elete_group ($group) {$this->_ci->db->delete ($this->settings_db, Array (' group ' = = $group));    if ($this->_ci->db->affected_rows () = = 0) {return FALSE;  } return TRUE; }}/* End of File setting.php *//* location:./application/libraries/setting.php */

Finally, open the application/config/config.php and add

/** * System Configuration Table name */$config [' settings_table '] = "system_settings";

It is hoped that this article is helpful to the PHP program design based on CodeIgniter framework.

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