maxdb_select_db

maxdb->select_db

(PECL maxdb:1.0-7.6.00.38)

maxdb->select_db — Selects the default database for database queries

Description

bool maxdb_select_db ( resource $link , string $dbname )

The maxdb_select_db() function selects the default database (specified by the dbname parameter) to be used when performing queries against the database connection represented by the link parameter.

Note: This function should only be used to change the default database for the connection. You can select the default database with 4th parameter in maxdb_connect().

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 Object oriented style


<?php

$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");



/* check connection */

if (maxdb_connect_errno()) {

   printf("Connect failed: %s\n", maxdb_connect_error());

   exit();

}



/* return name of current default database */

if ($result = $maxdb->query("SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) {

   $row = $result->fetch_row();

   printf("Default database is %s.\n", $row[0]);

   $result->close();

}



/* change db to non existing db */

$maxdb->select_db("XXXXXXXX");



/* return name of current default database */

if ($result = $maxdb->query("SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) {

   $row = $result->fetch_row();

   printf("Default database is %s.\n", $row[0]);

   $result->close();

}



$maxdb->close();

?>

Example #2 Procedural style


<?php

$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");



/* check connection */

if (maxdb_connect_errno()) {

   printf("Connect failed: %s\n", maxdb_connect_error());

   exit();

}



/* return name of current default database */

if ($result = maxdb_query($link, "SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) {

   $row = maxdb_fetch_row($result);

   printf("Default database is %s.\n", $row[0]);

   maxdb_free_result($result);

}



/* change db to non existing db */

maxdb_select_db($link, "XXXXXXXX");



/* return name of current default database */

if ($result = maxdb_query($link, "SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) {

   $row = maxdb_fetch_row($result);

   printf("Default database is %s.\n", $row[0]);

   maxdb_free_result($result);

}



maxdb_close($link);

?>

The above example will output something similar to:

Default database is <...>.

Warning: maxdb_select_db(): -10709 Connection failed (RTE:database not running) <...>

Warning: maxdb_query(): -10821 Session not connected [] <...>

Warning: maxdb_close(): -10821 Session not connected [] <...>

maxdb_select_db

maxdb->select_db

Description

Return Values

Examples

See Also