maxdb_change

Manuale PHP
Indietro		Avanti

Description

Procedural style:

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

Object oriented style (method):

class 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.

Nota: 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.

Example

Esempio 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("MONA", "RED", "XXXXXXX")) {
  printf("Database not running\n");
} else {
  printf("Database running\n");
}

/* close connection */
$maxdb->close();
?>

Esempio 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, $user, $passwd, "XXXXXXX")) {
  printf("Database not running\n");
} else {
  printf("Database running\n");
}

/* close connection */
maxdb_close($link);
?>

The above examples would produce the following output:

Result: a
PHP Warning:  maxdb_change_user(): -10709 Connection failed <...>
Database not running
PHP Warning:  maxdb_close(): -10821 Session not connected <...>

Indietro	Partenza	Avanti
maxdb_bind_result	Risali	maxdb_character_set_name

maxdb_change_user

Description

Return Values

See also:

Example