PHP 7.1.18 Released

maxdb_change_user

maxdb::change_user

(PECL maxdb >= 1.0)

maxdb_change_user -- maxdb::change_userChanges the user of the specified database connection

说明

过程化风格

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

面向对象风格

bool maxdb::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.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

范例

Example #1 面向对象风格

<?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 过程化风格

<?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);
?>

以上例程的输出类似于:

Result: a
Database running

参见

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