<code> function sql_add($name,$db_handle) { try{ $statement = $db_handle->prepare ( 'INSERT INTO qiangpiao(name,xuehao,xiaoqu,zuoweihao,time) VALUES (:name,:xuehao,:xiaoqu,:zuoweihao,:time)' ); $number = $db_handle->prepare ( 'select count(1) from qiangpiao' ); $number->execute(); /*变量的定义*/ $matches = array(); $matches = fenci($name); $name = $matches[1]; $xuehao = $matches[2]; $xiaoqu = $matches[3]; $zuoweihao = $number->fetch();//通过数据库来增加数据 echo $zuoweihao[0]; echo "\n"; $time = date("Y-m-d H:i:s",time()); echo $time; /*数据绑定*/ $statement->bindParam(':name',$name); $statement->bindParam(':xuehao',$xuehao); $statement->bindParam(':xiaoqu',$xiaoqu); $statement->bindParam(':zuoweihao',$zuoweihao[0]); $statement->bindParam(':time',$time); $statement->execute(); return; }catch(PODException $e){ echo $e->getMessage(); } }</code>
在数据库中,我设置了主键为学号,重复的话应该会返回一个异常,但我没有捕获到异常,是什么原因,有没有什么解决方法。
回复内容:
<code> function sql_add($name,$db_handle) { try{ $statement = $db_handle->prepare ( 'INSERT INTO qiangpiao(name,xuehao,xiaoqu,zuoweihao,time) VALUES (:name,:xuehao,:xiaoqu,:zuoweihao,:time)' ); $number = $db_handle->prepare ( 'select count(1) from qiangpiao' ); $number->execute(); /*变量的定义*/ $matches = array(); $matches = fenci($name); $name = $matches[1]; $xuehao = $matches[2]; $xiaoqu = $matches[3]; $zuoweihao = $number->fetch();//通过数据库来增加数据 echo $zuoweihao[0]; echo "\n"; $time = date("Y-m-d H:i:s",time()); echo $time; /*数据绑定*/ $statement->bindParam(':name',$name); $statement->bindParam(':xuehao',$xuehao); $statement->bindParam(':xiaoqu',$xiaoqu); $statement->bindParam(':zuoweihao',$zuoweihao[0]); $statement->bindParam(':time',$time); $statement->execute(); return; }catch(PODException $e){ echo $e->getMessage(); } }</code>
在数据库中,我设置了主键为学号,重复的话应该会返回一个异常,但我没有捕获到异常,是什么原因,有没有什么解决方法。
PODException
好像只会在new POD
的时候抛出,其他时候都得判断execute()
的返回值来确定操作是否成功,并通过errorCode()
,errorInfo()
来获取错误的信息……
默认不把错误当异常抛出,你需要使用 errorCode() 来判断是否执行成功。
你可以设置
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
这样来使得 SQL 执行出错的时候抛出异常。

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