我正在为 Magento 开发一个调用 Web 服务并添加 cookie 的模块。我希望在保存用户时调用类中的方法（ customer_save_after ）。在本地主机上开发时，我能够以某种方式使其工作，但在我尝试实现它的实时站点上出现此错误：
法师注册表键“_singleton/Eight18_Aqui4_Model_Observer”已经存在
这里有一个类似的线程，但它忽略了如何解决问题的实际细节。
这是我的 config.xml：（customer_save_after 事件似乎是错误开始的地方）
<?xml version="1.0"?>
<config>
<global>
<helpers>
<aqui4>
<class>Eight18_Aqui4_Helper</class>
</aqui4>
</helpers>
<modules>
<Eight18_aqui4>
<version>0.1.0</version>
</Eight18_aqui4>
</modules>
</global>
<adminhtml>
<acl>
<resources>
<all>
<title>Allow Everything</title>
</all>
<admin>
<children>
<Eight18_Aqui4>
<title>Aqui4 Module</title>
<sort_order>10</sort_order>
</Eight18_Aqui4>
</children>
</admin>
</resources>
</acl>
<layout>
<updates>
<aqui4>
<file>aqui4.xml</file>
</aqui4>
</updates>
</layout>
</adminhtml>
<default>
<main>
<enable>1</enable>
<siteid>0</siteid>
<sitetoken>0</sitetoken>
</main>
</default>
<frontend>
<events>
<customer_save_after>
<observers>
<aqui4_observer>
<class>Eight18_Aqui4_Model_Observer</class>
<method>start_aqui4</method>
</aqui4_observer>
</observers>
</customer_save_after>
</events>
<routers>
<aqui4>
<use>standard</use>
<args>
<module>Eight18_Aqui4</module>
<frontName>aqui4</frontName>
</args>
</aqui4>
</routers>
<layout>
<updates>
<aqui4>
<file>aqui4.xml</file>
</aqui4>
</updates>
</layout>
</frontend>
</config>
/公司/模块/模型/observer.php：
Public function start_aqui4() {//THIS IS CALLED BY THE EVENT OBSERVER ON CUSTOMER CREATION
// get variables
$userEmail = Mage::helper('aqui4')->getUserEmail();
$userFirstName = Mage::helper('aqui4')->getUserFirstName();
$userLastName = Mage::helper('aqui4')->getUserLastName();
$siteID = Mage::helper('aqui4')->getSiteID();
$siteToken = Mage::helper('aqui4')->getSiteToken();
$expire=time()+60*60*24*30.42*6;//THE LAST NUMBER IS THE MONTHS
$randomNumber = rand(0, pow(10, 5));//SERVICE EXPECTS RAND NUMBER
if(isset( $_COOKIE['aqui4userid'] )){//CHECK TO SEE IF USER ALREADY HAS A COOKIE
return;
}
else{//CHANGE JSON DATA SO JSON_DECODE CAN READ IT
$getContent = file_get_contents("http://www.domain.com/service.ashx?siteId=" . $siteID . "&token=" . $siteToken . "&email=" . $userEmail . "&data={\"firstName\":\"" . $userFirstName . "\",\"lastName\":\"" . $userLastName . "\",\"email\":\"" . $userEmail . "\",\"company\":\"\",\"position\":\"\",\"country\":\"\"}", true);
$getContent = str_replace('function __authenticate() ', '', $getContent);
$getContent = str_replace('{ return ', '', $getContent);
$getContent = str_replace(';}', '', $getContent);
$getContent = str_replace('\'', '"', $getContent);
$getContent = str_replace(': "', ':"', $getContent);
//SET THE USER ID AND ERROR VARS BASED ON DATA PASSED BACK
$getContentArray = json_decode($getContent, true);
$error = $getContentArray['HasError'];
$userID = $getContentArray['UserId'];
if($error){
if($error != "True"){//SERVICE RETURNS NO ERROR
setcookie("aqui4userid", $userID, $expire);
return;
}
else{//NO COOKIE SET - USER WAS NOT ADDED
return;
}
}
}
}
}
最后是 system.log 文件：
2012-07-24T23:21:52+00:00 ERR (3): Warning: include(/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php): failed to open stream: No such file or directory in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93
2012-07-24T23:21:52+00:00 ERR (3): Warning: include(): Failed opening '/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php' for inclusion (include_path='/var/www/clients/client3/web4/web/includes/src:.:/usr/share/php:/usr/share/pear') in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93
2012-07-24T23:21:52+00:00 ERR (3): Warning: include(/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php): failed to open stream: No such file or directory in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93
2012-07-24T23:21:52+00:00 ERR (3): Warning: include(): Failed opening '/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php' for inclusion (include_path='/var/www/clients/client3/web4/web/includes/src:.:/usr/share/php:/usr/share/pear') in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93
2012-07-24T23:21:54+00:00 ERR (3): Warning: include(/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php): failed to open stream: No such file or directory in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93
2012-07-24T23:21:54+00:00 ERR (3): Warning: include(): Failed opening '/var/www/clients/client3/web4/web/includes/src/Eight18_Aqui4_Model_Observer.php' for inclusion (include_path='/var/www/clients/client3/web4/web/includes/src:.:/usr/share/php:/usr/share/pear') in /var/www/clients/client3/web4/web/includes/src/Varien_Autoload.php on line 93