(PECL maxdb >= 1.0)
maxdb_change_user -- maxdb::change_user — Changes the user of the specified database connection
Styl proceduralny
$link
, string $user
, string $password
, string $database
)Styl obiektowy
$user
, string $password
, string $database
)
maxdb_change_user() is used to change the user of the specified
database connection as given by the link parameter and to set the
current database to that specified by the database parameter.
In order to successfully change users a valid username and
password parameters must be provided and that user must have
sufficient permissions to access the desired database. If for any reason authorization
fails, the current user authentication will remain.
Informacja:
Using this command will always cause the current database connection to behave as if was a completely new database connection, regardless of if the operation was completed successfully. This reset includes performing a rollback on any active transactions, closing all temporary tables, and unlocking all locked tables.
Zwraca TRUE w przypadku powodzenia, FALSE w
przypadku błędu.
Przykład #1 Styl obiektowy
<?php
/* connect database test */
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($result = $maxdb->query("SELECT * FROM dual")) {
$row = $result->fetch_row();
printf("Result: %s\n", $row[0]);
$result->free();
}
/* reset all and select a new database */
if (!$maxdb->change_user("DBADMIN", "SECRET", "DEMODB")) {
printf("Database not running\n");
} else {
printf("Database running\n");
}
/* close connection */
$maxdb->close();
?>
Przykład #2 Styl proceduralny
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (!$link) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($result = maxdb_query($link, "SELECT * FROM dual")) {
$row = maxdb_fetch_row($result);
printf("Result: %s\n", $row[0]);
maxdb_free_result($result);
}
/* reset all and select a new database */
if (!maxdb_change_user($link, "DBADMIN", "SECRET", "DEMODB")) {
printf("Database not running\n");
} else {
printf("Database running\n");
}
/* close connection */
maxdb_close($link);
?>
Powyższy przykład wyświetli coś podobnego do:
Result: a Database running