MaxDB 函数
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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

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.

返回值

如果成功则返回 TRUE,失败则返回 FALSE

范例

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);
?>

上例的输出类似于:

Result: a
Database running

参见


MaxDB 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程