PDOStatement::errorCode()

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0)

获取跟上一次语句句柄操作相关的 SQLSTATE

说明

返回值

与PDO::errorCode()相同，只是PDOStatement::errorCode()只取回 PDOStatement 对象执行操作中的错误码。

范例

取回一个 SQLSTATE 码

以上例程会输出：

PDOStatement::errorCode(): 42S02

参见

• PDO::errorCode() 获取跟数据库句柄上一次操作相关的 SQLSTATE
• PDO::errorInfo() Fetch extended error information associated with the last operation on the database handle
• PDOStatement::errorInfo() 获取跟上一次语句句柄操作相关的扩展错误信息

Statement's errorCode() returns an empty string before execution, and '00000' (five zeros) after a sucessfull execution: 

Neither this property nor the PDOStatement::errorInfo() properties are available if you create your own exception handler.
I am using PHP 5.2.4, PDO_INFORMIX 1.2.0.
Making this call at any point in the program after setting your own exception handler produces an error:
PHP Notice: Undefined property: PDOStatement::$errorCode in new_query.php on line
or
PHP Notice: Undefined property: PDOStatement::$errorInfo in new_query.php on line
But if I set the PDO to SILENT, only set error codes with:
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT)
Then process with if/else the call to this functions works fine. The examples below only do error checking to show the result codes of this function. Normally you would want more.
FAILS:
$dbh = new PDO("informix...")
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
try {
   $result = $dbh->query("asdfkjasdfkjasdfjk"); /* obvious sql error */
   if ($result) print "success!";
   }
catch
   {
   $myeCode = $dbh->errorCode();
   /* do stuff with error */
   };
$dbh=0;
The error handler gets called but knows nothing about $dbh->errorCode or $dbh->errorInfo.
WORKS:
$dbh = new PDO("informix...")
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
$result = $dbh->query("asdfkjasdfkjasdfjk"); /* obvious sql error */
if ($result) 
   {
   /* process result */
   print "success!";
   /* all done, didn't make any changes */
   $dbh->rollback();
   }
else
   {
   $myeCode = $dbh->errorCode();
   print_r($myeCode);
   };
$dbh=0; /* close connection */
I hope this helps someone else.
Cheers,
David

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