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(PECL maxdb >= 1.0)
maxdb_change_user -- maxdb::change_user — Changes the user of the specified database connection
过程化风格
$link
, string $user
, string $password
, string $database
)面向对象风格
$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.
Note:
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.
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Example #1 面向对象风格
<?php
$maxdb = new maxdb ( "localhost" , "MONA" , "RED" , "DEMODB" );
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 ();
}
if (! $maxdb -> change_user ( "DBADMIN" , "SECRET" , "DEMODB" )) {
printf ( "Database not running\n" );
} else {
printf ( "Database running\n" );
}
$maxdb -> close ();
?>
Example #2 过程化风格
<?php
$link = maxdb_connect ( "localhost" , "MONA" , "RED" , "DEMODB" );
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 );
}
if (! maxdb_change_user ( $link , "DBADMIN" , "SECRET" , "DEMODB" )) {
printf ( "Database not running\n" );
} else {
printf ( "Database running\n" );
}
maxdb_close ( $link );
?>
以上例程的输出类似于:
Result: a Database running