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# db2_conn_error

(PECL)

db2_conn_error -- Returns a string containing the SQLSTATE returned by the last connection attempt

## Descrizione

string db2_conn_error ( [resource connection] )

db2_conn_error() returns an SQLSTATE value representing the reason the last attempt to connect to a database failed. As db2_connect() returns `FALSE` in the event of a failed connection attempt, you do not pass any parameters to db2_conn_error() to retrieve the SQLSTATE value.

If, however, the connection was successful but becomes invalid over time, you can pass the connection parameter to retrieve the SQLSTATE value for a specific connection.

To learn what the SQLSTATE value means, you can issue the following command at a DB2 Command Line Processor prompt: `db2 '? sqlstate-value'`. You can also call db2_conn_errormsg() to retrieve an explicit error message and the associated SQLCODE value.

## Elenco dei parametri

connection

  A connection resource associated with a connection that initially succeeded, but which over time became invalid.

## Valori restituiti

Returns the SQLSTATE value resulting from a failed connection attempt. Returns an empty string if there is no error associated with the last connection attempt.

## Esempi

Esempio 1. Retrieving an SQLSTATE value for a failed connection attempt

The following example demonstrates how to return an SQLSTATE value after deliberately passing invalid parameters to db2_connect().

`<?php $conn = db2_connect('badname', 'baduser', 'badpassword'); if (!$conn) { print "SQLSTATE value: " . db2_conn_error(); } ?>`

Il precedente esempio visualizzerà:

    SQLSTATE value: 08001

## Vedere anche:

db2_conn_errormsg()
db2_connect()
db2_stmt_error()
db2_stmt_errormsg()

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