Import Data Excel Dengan Codeigniter 4

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<?php namespace Config;

require_once SYSTEMPATH . 'Config/AutoloadConfig.php';

/**
 * -------------------------------------------------------------------
 * AUTO-LOADER
 * -------------------------------------------------------------------
 * This file defines the namespaces and class maps so the Autoloader
 * can find the files as needed.
 */
class Autoload extends \CodeIgniter\Config\AutoloadConfig
{
	public $psr4 = [];

	public $classmap = [];

	//--------------------------------------------------------------------

	/**
	 * Collects the application-specific autoload settings and merges
	 * them with the framework's required settings.
	 *
	 * NOTE: If you use an identical key in $psr4 or $classmap, then
	 * the values in this file will overwrite the framework's values.
	 */
	public function __construct()
	{
		parent::__construct();

		/**
		 * -------------------------------------------------------------------
		 * Namespaces
		 * -------------------------------------------------------------------
		 * This maps the locations of any namespaces in your application
		 * to their location on the file system. These are used by the
		 * Autoloader to locate files the first time they have been instantiated.
		 *
		 * The '/app' and '/system' directories are already mapped for
		 * you. You may change the name of the 'App' namespace if you wish,
		 * but this should be done prior to creating any namespaced classes,
		 * else you will need to modify all of those classes for this to work.
		 *
		 * DO NOT change the name of the CodeIgniter namespace or your application
		 * WILL break. *
		 * Prototype:
		 *
		 *   $Config['psr4'] = [
		 *       'CodeIgniter' => SYSPATH
		 *   `];
		 */
		$psr4 = [
			'App'         => APPPATH,                // To ensure filters, etc still found,
			APP_NAMESPACE => APPPATH,                // For custom namespace
			'Config'      => APPPATH . 'Config',
		];

		/**
		 * -------------------------------------------------------------------
		 * Class Map
		 * -------------------------------------------------------------------
		 * The class map provides a map of class names and their exact
		 * location on the drive. Classes loaded in this manner will have
		 * slightly faster performance because they will not have to be
		 * searched for within one or more directories as they would if they
		 * were being autoloaded through a namespace.
		 *
		 * Prototype:
		 *
		 *   $Config['classmap'] = [
		 *       'MyClass'   => '/path/to/class/file.php'
		 *   ];
		 */
		$classmap = [
			'PHPExcel' => APPPATH .'ThirdParty/PHPExcel/PHPExcel.php'
		];

		//--------------------------------------------------------------------
		// Do Not Edit Below This Line
		//--------------------------------------------------------------------

		$this->psr4     = array_merge($this->psr4, $psr4);
		$this->classmap = array_merge($this->classmap, $classmap);

		unset($psr4, $classmap);
	}

	//--------------------------------------------------------------------
}

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<?php namespace App\Controllers;
use PHPExcel;
use PHPExcel_IOFactory;