How to set or get the config variables in Codeigniter ? Last Updated : 23 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Config Class: The Config class provides means to retrieve configuration preferences. The config items in Codeigniter can be set and get in the environment. The config value $this->config can be used to get and set items in the environment. The config items are contained within an array, namely, $config. The config file is stored at "application/config/config.php", which may provide opportunities to add new items or create a separate entity of configuration items. CodeIgniter by default loads the primary config file (application/config/config.php), whereas the custom files need to be externally loaded. Setting config variable value: The config variable in CodeIgniter can be set in the environment using the following two methods. The config class method set_item() is used to set the value of a variable in Codeigniter. The set_item() can be used to dynamically set a config item or modify an existing one. Syntax: $this->config->set_item('item_name', 'item_value'); Arguments: item_name: $config array item name to be changed.item_value: The value to be changed. PHP <?php // Setting the value of config variable $this->config->set_item('str', "Hello GFG!"); echo($this->config->item('str')); ?> Output: [1] "Hello GFG!" The config item can also be modified or initialized using the key-value pair defined in the $config variable. The item value of the config variable can also be set using the key-value pair in CodeIgniter. PHP <?php $config['str'] = "Hello GFG!"; echo($this->config->item('str')); ?> Output: [1] "Hello GFG!" Getting config variable value: The config items can also be easily fetched from the CodeIgniter environment. The config class function item() is used to get the value of a config variable in Codeigniter. Syntax: $this->config->item('item_name'); Arguments: item_name: $config array index to be retrieved. Return Value: This function returns a value of the array index key specified, or NULL if no such key exists. PHP <?php // Getting the value of config variable $this->config->item('str'); ?> Output: [1] "Hello GFG!" Comment More infoAdvertise with us Next Article PHP Syntax C codersgram9 Follow Improve Article Tags : Web Technologies PHP PHP-Questions Similar Reads PHP Tutorial PHP is a popular, open-source scripting language mainly used in web development. It runs on the server side and generates dynamic content that is displayed on a web application. PHP is easy to embed in HTML, and it allows developers to create interactive web pages and handle tasks like database mana 9 min read BasicsPHP SyntaxPHP, a powerful server-side scripting language used in web development. It’s simplicity and ease of use makes it an ideal choice for beginners and experienced developers. 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