Creating Custom Helpers in CodeIgniter
CodeIgniter helpers facilitate working with arrays and other data by providing reusable functions. If you find yourself writing similar loop functions repeatedly across different views, consider creating a custom helper to keep your code organized and concise.
Defining the Helper File
A CodeIgniter helper is a PHP file containing helper functions. Unlike classes, helpers do not have a constructor or methods.
Create a new file in the "application/helpers" directory and name it "loops_helper.php". Add the following code:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); if ( ! function_exists('array_sort_by_key')) { function array_sort_by_key($array, $key) { usort($array, function($a, $b) use ($key){ return $a[$key] > $b[$key]; }); } }
Loading the Helper
To use your custom helper, load it into your controller, model, or view. It's recommended to avoid loading helpers in views.
In your controller:
$this->load->helper('loops_helper');
Using the Helper Functions
Once loaded, you can use the helper functions as follows:
array_sort_by_key($myArray, 'name');
Autoloading the Helper
If you want the helper to be loaded automatically, add it to the "helper" array in the "application/config/autoload.php" file:
$autoload['helper'] = array('loops_helper');
Additional Notes
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