Question

I use this code to have a js popup on each side telling visitors that the shop is not productive:

<?php
$ip = $_SERVER['REMOTE_ADDR'];
if ($ip == 'xxx.xxx.xxx.xxx' OR $ip == 'xxx.xxx.xxx.xx') { ?>
You are a developer
<?php } else { ?> 
You are a visitor
<?php } ?>

My question is, how can I use the developer Ip from the magento backend in this code
->System -> Configuration -> Developer -> Developer Client Restrictions

Answer 1

you can get this like any other config value

Mage::getStoreConfig('dev/restrict/allow_ips', $storeId)
Mage::getStoreConfig('dev/restrict/allow_ips')

and then

or just

<?php $isDeveloper = (strstr(Mage::getStoreConfig('dev/restrict/allow_ips', $storeId), Mage::helper('core/http')->getRemoteAddr())) ? true : false; ?>

or just (as pointed by MagePsycho in comments)

if(Mage::helper('core')->isDevAllowed()){ }