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pdo用prepare执行insert,增加记录失败,但捕获不到异常

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Release: 2016-06-13 12:22:49
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pdo用prepare执行insert,增加记录失败,但捕获不到错误
$st = $this->pdo->prepare("insert into $tablename ($field) values($code)");
$st->execute($arr);
if ($this->pdo->errorCode() != '00000')test($this->pdo->errorInfo());
return $this->pdo->lastInsertId();

故意让一个不能为空的字段给一个空值,然后上面的代码执行后获取不到错误(也输出过errorCode() 是= '00000'),但pdo->lastInsertId()返回的是0,打开数据库去看也是没有成功新增记录,这种PDO预处理的SQL该怎么获取错误提示?
------解决思路----------------------

if ($st->errorCode() != '00000') test($st->errorInfo());
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或 $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
后,使用异常处理
try {<br />  ....<br />  $st->execute($arr);<br />  ....<br />} catch (PDOException $e) {<br />  print "Error!: " . $e->getMessage() . "\n";<br />}
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