PHP-Handbuch: Returns a string containing the SQLSTATE returned by the last connection attempt

Beschreibung

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.

Parameter-Liste

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

Rückgabewerte

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.

Beispiele

Beispiel #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();
}
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

SQLSTATE value: 08001

Siehe auch

db2_conn_errormsg
db2_connect
db2_stmt_error
db2_stmt_errormsg