CI Loader Helper

CI_Loader_helper.php

<?php
public function helper($helpers = array())
	{
		foreach ($this->_ci_prep_filename($helpers, '_helper') as $helper)
		{
			if (isset($this->_ci_helpers[$helper]))
			{
				continue;
			}

			$ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.'.php';

			// Is this a helper extension request?
			if (file_exists($ext_helper))
			{
				$base_helper = BASEPATH.'helpers/'.$helper.'.php';

				if ( ! file_exists($base_helper))
				{
					show_error('Unable to load the requested file: helpers/'.$helper.'.php');
				}

				include_once($ext_helper);
				include_once($base_helper);

				$this->_ci_helpers[$helper] = TRUE;
				log_message('debug', 'Helper loaded: '.$helper);
				continue;
			}

			// Try to load the helper
			foreach ($this->_ci_helper_paths as $path)
			{
				if (file_exists($path.'helpers/'.$helper.'.php'))
				{
					include_once($path.'helpers/'.$helper.'.php');

					$this->_ci_helpers[$helper] = TRUE;
					log_message('debug', 'Helper loaded: '.$helper);
					break;
				}
			}

			// unable to load the helper
			if ( ! isset($this->_ci_helpers[$helper]))
			{
				show_error('Unable to load the requested file: helpers/'.$helper.'.php');
			}
		}
	}