php5.2.6安裝配置xdebug 提示the requested operation has failed 解決辦法

1、我選的最終版本：php_xdebug-2.1.0-5.2-vc6.dll

2、apache錯誤日誌

      httpd.exe: Could not reliably determine the server's fully qualified domain name, using 172.10.84.73 for ServerName
      PHP Fatal error:  [Zend Optimizer] Zend Optimizer 3.3.0 is incompatible with Xdebug 2.1.0 in Unknown on line 0

3、最終確定這是和Zend Optimizer 3.3.0 衝突造成的

4、解決辦法：

      [Zend]
zend_extension_manager.optimizer_ts="D:\website\ZendOptimizer\lib\Optimizer-3.3.0"
zend_extension_ts="D:\website\ZendOptimizer\lib\ZendExtensionManager.dll"

      註釋掉上邊兩行，重啓apache即可