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# PDO::errorInfo

(no version information, might be only in CVS)

PDO::errorInfo -- Fetch extended error information associated with the last operation on the database handle

## Description

array PDO::errorInfo ( void )

警告
這個函數是實驗性質的。這個函數的行為、名稱、和關於此函數的任何其他文件在未來PHP的發行中可能會在不通知的情況下改變。 使用此延伸需自行承擔風險。

## Return Values

PDO::errorInfo() returns an array of error information about the last operation performed by this database handle. The array consists of the following fields:

Element | Information
--- | ---
0 | SQLSTATE error code (a five-character alphanumeric identifier defined in the ANSI SQL standard).
1 | Driver-specific error code.
2 | Driver-specific error message.

PDO::errorInfo() only retrieves error information for operations performed directly on the database handle. If you create a PDOStatement object through PDO::prepare() or PDO::query() and invoke an error on the statement handle, PDO::errorInfo() will insert an error code of PDO_ERR_NONE into the first element of the returned array. You must call PDOStatement::errorInfo() to return the error information for an operation performed on a particular statement handle.

## 範例

範例 1. Displaying errorInfo() fields for a PDO_ODBC connection to a DB2 database

`<?php /* Provoke an error -- the BONES table does not exist */ $err = $dbh->prepare('SELECT skull FROM bones'); $err->execute(); echo "\nPDO::errorInfo():\n"; print_r($err->errorInfo()); ?>`

The above example will output:

    PDO::errorInfo():
    Array
    (
        [0] => 42S02
        [1] => -204
        [2] => [IBM][CLI Driver][DB2/LINUX] SQL0204N  "DANIELS.BONES" is an undefined name.  SQLSTATE=42704
    )

## 參考

PDO::errorCode()
PDOStatement::errorCode()
PDOStatement::errorInfo()

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