PHP. Руководство по PHP. 2005

maxdb_select_db

(PECL)maxdb_select_db

(no version information, might be only in CVS)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.

Замечание: 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

Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.

Example

Пример 1. Object oriented style


<?
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/*check connection*/
if (maxdb_connect_errno()){
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/*return name of current default database*/
if ($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();

?>

Пример 2. Procedural style


<?
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/*check connection*/
if (maxdb_connect_errno()){
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/*return name of current default database*/
if ($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 examples would produce the following output:

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_rpl_query_type

maxdb_send_long_data

Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.

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PHP. Руководство по PHP. 2005

maxdb_select_db

Description

Return values

See also

Example