public function is_installed($module_name)
{
$module_name = trim($module_name);
$module_namei = $module_name;
if (strstr($module_name, 'admin')) {
$module_namei = str_ireplace('\\admin', '', $module_namei);
$module_namei = str_ireplace('/admin', '', $module_namei);
}
$uninstall_lock = $this->get('one=1&ui=any&module=' . $module_namei);
if (empty($uninstall_lock) or isset($uninstall_lock['installed']) and $uninstall_lock['installed'] != '' and intval($uninstall_lock['installed']) != 1) {
return false;
} else {
return true;
}
}