Php MySQL异常"；PDOException对象（[message:protected]=>；SQLSTATE[42000]”；

我是PHP和MySQL的新手。我正在尝试安装

http://sourceforge.net/projects/candidats/

php软件。在安装过程中，当安装或将数据加载到数据库时，我发现以下错误。有人能帮我找到正确的方向吗

    PDOException Object ( [message:protected] => SQLSTATE[42000]: Syntax error or access violation: 
    1064 You have an error in your SQL syntax; check the manual that corresponds to your 
    MySQL server version for the right syntax to use near ‘IGNORE TABLE email_history ADD COLUMN for_module varchar(255) 
    default NULL’ at line 1 [string:Exception:private] => [code:protected] => 42000 [file:protected] => C:\inetpub\wwwroot\Cats\lib\ClsNaanalPDO.php 
    [line:protected] => 124 [trace:Exception:private] => Array ( [0] => Array ( [file] => 
C:\inetpub\wwwroot\Cats\lib\ClsNaanalPDO.php [line] => 124 [function] => execute [class] => 
PDOStatement [type] => -> [args] => Array ( ) ) [1] => Array ( 
[file] => C:\inetpub\wwwroot\Cats\lib\ClsNaanalPDO.php [line] => 
555 [function] => query [class] => ClsNaanalPDO [type] => 
-> [args] => Array ( [0] => ALTER IGNORE TABLE email_history ADD COLUMN for_module 
varchar(255) default NULL ) ) [2] => Array ( [file] =>
 C:\inetpub\wwwroot\\Cats\lib\DatabaseConnectionPDO.php 
[line] => 149 [function] => setQuery [class] => ClsNaanalPDO 
[type] => -> [args] => Array ( [0] => ALTER IGNORE TABLE 
email_history ADD COLUMN for_module varchar(255) default NULL ) ) 
[3] => Array ( [file] => C:\inetpub\wwwroot\Cats\modules\install\ajax\ui.php [line] => 1172
 [function] => query [class] => DatabaseConnection [type] => -> 
[args] => Array ( [0] => ALTER IGNORE TABLE email_history 
ADD COLUMN for_module varchar(255) default NULL ) ) [4] => Array ( [file] => 

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您的MySQL版本是什么？“从MySQL 5.7.4开始，ALTER TABLE的IGNORE子句被删除，它的使用会产生一个错误。”服务器版本：5.7.10-log-MySQL社区服务器（GPL）看起来这就是原因。ALTER IGNORE不再受支持，因此您可能需要从代码中挖掘这些内容并将其更改为简单的

ALTER

，希望不会出现索引冲突。