Autoload.php設定

$autoload['config'] = array('global');
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config->新建global.php

<?php 
    $config['pay_channel'][0] = "線上信用卡";
    $config['pay_channel'][2] = "ATM";
    $config['pay_channel'][3] = "超商付款";
    $config['pay_channel'][4] = "PayPal (可用銀聯卡)";
    $config['pay_channel'][7] = "郵局劃撥";
    $config['pay_channel'][8] = "台中銀行超商繳款";

?>

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可以在VIEW or CONTROL

//直接存入陣列A
**print_r($this->config->item('item name');)**

輸出結果:
Array
(
    [0] => 線上信用卡
    [2] => ATM
    [3] => 超商付款
    [4] => PayPal (可用銀聯卡)
    [7] => 郵局劃撥
    [8] => 台中銀行超商繳款
)
——————————————————————————————————————————————
//指定第0筆資料
print_r($this->config->item('pay_channel')[0]);

輸出結果:
線上信用卡