ckfinder - 解析错误:语法错误,CommandHandlerBase.php中的意外T_STRING [复制]

I'm installing a version (2.6) of ckfinder I usually have no problem with on a site and getting the following error:

Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /ckfinder/core/connector/php/php5/CommandHandler/CommandHandlerBase.php on line 38

Those lines are:

30 class CKFinder_Connector_CommandHandler_CommandHandlerBase 
31 {
32     /**
33      * CKFinder_Connector_Core_Connector object
34      *
35      * @access protected
36      * @var CKFinder_Connector_Core_Connector
37      */
38     protected $_connector;

Does anyone have any ideas why this error might be happening on this site and not others?

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