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# maxdb_change_user

# maxdb->change_user

(PECL maxdb >= 1.0)

maxdb_change_user -- maxdb->change_user — Changes the user of the specified database connection

### 설명

Procedural style:

bool maxdb_change_user ( resource `$link` , string `$user` , string `$password` , string `$database` )

Object oriented style (method):

maxdb
bool change_user ( string `$user` , string `$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.

### 반환값

성공할 경우 `TRUE`를, 실패할 경우 `FALSE`를 반환합니다.

### 예제

Example #1 Object oriented style

`<?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();
?>`

Example #2 Procedural style

`<?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);
?>`

위 예제의 출력 예시:

    Result: a
    Database running

### 참고

- maxdb_connect() - Open a new connection to the MaxDB server
- maxdb_select_db() - Selects the default database for database queries

maxdb_bind_result
maxdb_character_set_name
MaxDB 함수 목록
PHP Manual