phpMyAdmin 就是一种 MySQL 数据库的管理工具，安装该工具后，即可以通过 web 形式直接管理 MySQL 数据，而不需要通过执行系统命令来管理，非常适合对数据库操作命令不熟悉的数据库管理者，下面详细说明该工具的安装方法。
一、下载
1、先到官方站点下载phpMyAdmin 安装包：http://www.phpmyadmin.net/ （安装包含各种语言all-languages）
2、再解压到 web 可以访问的目录下，如果是虚拟空间，可以解压后通过 ftp 工具上传到 web 目录下，同时您可以修改解压后该文件的名称（你可以自定义目录名称）。
二、配置
3、打开 /libraries/config.default.php文件（旧版本是根目录下的config.inc.php文件），用写字板（不要用记事本，这是UTF8编码）进行编辑，按照说明配置即可。
4、查找 $cfg[\'PmaAbsoluteUri\']=‘\'; // 修改为你将上传到空间的phpMyAdmin的网址
如：$cfg[\'PmaAbsoluteUri\'] =‘http: // 网站域名/phpmyadmin/\';
5、查找 $cfg[\'Servers\'][$i][\'host\'] =‘localhost\'; // 通常用默认，也有例外，可以不用修改
6、查找 $cfg[\'Servers\'][$i][\'auth_type\'] =‘config\'; // 在自己的机子里调试用config；如果在网络上的空间用cookie.
在此有四种模式可供选择：cookie，http，HTTP，config
① config 方式即输入phpMyAdmin 的访问网址即可直接进入，无需输入用户名和密码，是不安全的，不推荐使用。
② 设置cookie，http，HTTP方式，登录 phpMyAdmin 需要数据用户名和密码进行验证。
具体如下：PHP 安装模式为 Apache，可以使用 http 和 cookie；PHP 安装模式为 CGI，可以使用 cookie。
7、查找 $cfg[\'Servers\'][$i][\'user\'] = ‘root\'; // MySQL用户名
8、查找 $cfg[\'Servers\'][$i][\'password\'] =\'\'; // MySQL 密码 (only needed 留空就可以了)
9、查找 $cfg[\'Servers\'][$i][\'only_db\'] = \'\'; // 你只有一个数据就设置一下,设置为你的数据库名；如果你想架设服务器，那么建议留空
10、查找 $cfg[\'DefaultLang\'] = ‘zh\'; // 这里是选择语言，zh代表简体中文的意思
11、查找$cfg[\'blowfish_secret\'] =\'\'; // 如果认证方法设置为cookie，就需要设置短语密码，设置为什么密码，由您自己决定，这里不能留空，否则会在登录 phpMyAdmin 时提示如下图所示的错误。
12、设置完毕后保存，现在可以上传到网络空间上了，浏览http://网站域名/phpmyadmin/测试一下。（输入数据库的用户名及密码就可以了）
如果要安装过程中出现：“phpMyAdmin - 错误 缺少 mysqli 扩展。请检查 PHP 配置。”错误。
解决方法如下：
①到phpmyadmin文件夹的\libraries\config.default.php文件中找：$cfg[\'Servers\'][$i][\'extension\']=\'mysql\';语句。
②如果有找到$cfg[\'Servers\'][$i][\'extension\']=\'mysql\';这句，就继续查找下面这句$cfg[\'Servers\'][$i][\'extension\']=\'mysqli\'; 并把其的注释去掉。
③如果没有找到$cfg[\'Servers\'][$i][\'extension\']=\'mysql\';这句，就把$cfg[\'Servers\'][$i][\'extension\']=\'mysqli\';语句，改成$cfg[\'Servers\'][$i][\'extension\']=\'mysql\'; 语句。（即确保 " mysql " 值能生效）
<?php
/* $Id: config.inc.php,v 1.204.2.1 2003/10/10 14:24:24 nijel Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
* phpMyAdmin Configuration File
*
* All directives are explained in Documentation.html
*/
/**
* Sets the php error reporting - Please do not change this line!
*/
if (!isset($old_error_reporting)) {
error_reporting(E_ALL);
@ini_set(\'display_errors\', \'1\');
}
/**
* Your phpMyAdmin url
*
* Complete the variable below with the full url ie
* http://www.your_web.net/path_to_your_phpMyAdmin_directory/
*
* It must contain characters that are valid for a URL, and the path is
* case sensitive on some Web servers, for example Unix-based servers.
*
* In most cases you can leave this variable empty, as the correct value
* will be detected automatically. However, we recommend that you do
* test to see that the auto-detection code works in your system. A good
* test is to browse a table, then edit a row and save it. There will be
* an error message if phpMyAdmin cannot auto-detect the correct value.
*
* If the auto-detection code does work properly, you can set to TRUE the
* $cfg[\'PmaAbsoluteUri_DisableWarning\'] variable below.
*/
$cfg[\'PmaAbsoluteUri\'] = \'\';-----这里设置你的phpmyadmin的URL，如：http://localhost/phpmyadmin/
/**
* Disable the default warning about $cfg[\'PmaAbsoluteUri\'] not being set
* You should use this if and ONLY if the PmaAbsoluteUri auto-detection
* works perfectly.
*/
$cfg[\'PmaAbsoluteUri_DisableWarning\'] = FALSE;
/**
* Disable the default warning that is displayed on the DB Details Structure page if
* any of the required Tables for the relationfeatures could not be found
*/
$cfg[\'PmaNoRelation_DisableWarning\'] = FALSE;
/**
* The \'cookie\' auth_type uses blowfish algorithm to encrypt the password. If
* at least one server configuration uses \'cookie\' auth_type, enter here a
* passphrase that will be used by blowfish.
$cfg[\'blowfish_secret\'] = \'\';-----设定好root密码后这里也要填写
/**
* Server(s) configuration
*/
$i = 0;
// The $cfg[\'Servers\'] array starts with $cfg[\'Servers\'][1]. Do not use $cfg[\'Servers\'][0].
// You can disable a server config entry by setting host to \'\'.
$i++;
$cfg[\'Servers\'][$i][\'host\'] = \'localhost\'; // MySQL hostname or IP address----这里可以设定远程MySQL服务器IP地址
$cfg[\'Servers\'][$i][\'port\'] = \'\'; // MySQL port - leave blank for default port-----默认为3306
$cfg[\'Servers\'][$i][\'socket\'] = \'\'; // Path to the socket - leave blank for default socket
$cfg[\'Servers\'][$i][\'connect_type\'] = \'tcp\'; // How to connect to MySQL server (\'tcp\' or \'socket\')-----连接MySQL服务器的方式
$cfg[\'Servers\'][$i][\'compress\'] = FALSE; // Use compressed protocol for the MySQL connection
// (requires PHP >= 4.3.0)-----是否使用压缩协议，PHP版本须>= 4.3.0
$cfg[\'Servers\'][$i][\'controluser\'] = \'\'; // MySQL control user settings
// (this user must have read-only
$cfg[\'Servers\'][$i][\'controlpass\'] = \'\'; // access to the "mysql/user"
// and "mysql/db" tables)-----MySQL控制用户设定，该用户只对mysql数据库下的user和db表有完全权限
$cfg[\'Servers\'][$i][\'auth_type\'] = \'config\';
// Authentication method (config, http or cookie based)?-----如果PHP安装模式为Apache，可以使用http和cookie；如果PHP安装模式为CGI，可以使用cookie；默认为config，是不安全的，不推荐。
$cfg[\'Servers\'][$i][\'user\'] = \'root\'; // MySQL user-----MySQL连接用户
$cfg[\'Servers\'][$i][\'password\'] = \'\';
// MySQL password (only needed with \'config\' auth_type)-----MySQL连接密码，建议在安装好PHP和MySQL后，先用phpmyadmin设定root密码，然后在这里填写
$cfg[\'Servers\'][$i][\'only_db\'] = \'\'; // If set to a db-name, only
// this db is displayed
// at left frame
// It may also be an array
// of db-names-----如果在这里设定一个数据库的名字，那么登陆后框架左边将只显示这个数据库
$cfg[\'Servers\'][$i][\'verbose\'] = \'\'; // Verbose name for this host - leave blank to show the hostname
$cfg[\'Servers\'][$i][\'pmadb\'] = \'\'; // Database used for Relation, Bookmark and PDF Features
// (see scripts/create_tables.sql)
// - leave blank for no support
// DEFAULT: \'phpmyadmin\'
$cfg[\'Servers\'][$i][\'bookmarktable\'] = \'\'; // Bookmark table
// - leave blank for no bookmark support
// DEFAULT: \'pma_bookmark\'
$cfg[\'Servers\'][$i][\'relation\'] = \'\'; // table to describe the relation between links (see doc)
// - leave blank for no relation-links support
// DEFAULT: \'pma_relation\'
$cfg[\'Servers\'][$i][\'table_info\'] = \'\'; // table to describe the display fields
// - leave blank for no display fields support
// DEFAULT: \'pma_table_info\'
$cfg[\'Servers\'][$i][\'table_coords\'] = \'\'; // table to describe the tables position for the PDF schema
// - leave blank for no PDF schema support
// DEFAULT: \'pma_table_coords\'
$cfg[\'Servers\'][$i][\'pdf_pages\'] = \'\'; // table to describe pages of relationpdf
// - leave blank if you don\'t want to use this
// DEFAULT: \'pma_pdf_pages\'
$cfg[\'Servers\'][$i][\'column_info\'] = \'\'; // table to store column information
// - leave blank for no column comments/mime types
// DEFAULT: \'pma_column_info\'
$cfg[\'Servers\'][$i][\'history\'] = \'\'; // table to store SQL history
// - leave blank for no SQL query history
// DEFAULT: \'pma_history\'
$cfg[\'Servers\'][$i][\'verbose_check\'] = TRUE; // set to FALSE if you know that your pma_* tables
// are up to date. This prevents compatibility
// checks and thereby increases performance.
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'order\'] // Host authentication order, leave blank to not use
= \'\';
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'rules\'] // Host authentication rules, leave blank for defaults
= array();
$i++;
$cfg[\'Servers\'][$i][\'host\'] = \'\';
$cfg[\'Servers\'][$i][\'port\'] = \'\';
$cfg[\'Servers\'][$i][\'socket\'] = \'\';
$cfg[\'Servers\'][$i][\'connect_type\'] = \'tcp\';
$cfg[\'Servers\'][$i][\'compress\'] = FALSE;
$cfg[\'Servers\'][$i][\'controluser\'] = \'\';
$cfg[\'Servers\'][$i][\'controlpass\'] = \'\';
$cfg[\'Servers\'][$i][\'auth_type\'] = \'config\';
$cfg[\'Servers\'][$i][\'user\'] = \'root\';
$cfg[\'Servers\'][$i][\'password\'] = \'\';
$cfg[\'Servers\'][$i][\'only_db\'] = \'\';
$cfg[\'Servers\'][$i][\'verbose\'] = \'\';
$cfg[\'Servers\'][$i][\'pmadb\'] = \'\'; // \'phpmyadmin\' - see scripts/create_tables.sql
$cfg[\'Servers\'][$i][\'bookmarktable\'] = \'\'; // \'pma_bookmark\'
$cfg[\'Servers\'][$i][\'relation\'] = \'\'; // \'pma_relation\'
$cfg[\'Servers\'][$i][\'table_info\'] = \'\'; // \'pma_table_info\'
$cfg[\'Servers\'][$i][\'table_coords\'] = \'\'; // \'pma_table_coords\'
$cfg[\'Servers\'][$i][\'pdf_pages\'] = \'\'; // \'pma_pdf_pages\'
$cfg[\'Servers\'][$i][\'column_info\'] = \'\'; // \'pma_column_info\'
$cfg[\'Servers\'][$i][\'history\'] = \'\'; // \'pma_history\'
$cfg[\'Servers\'][$i][\'verbose_check\'] = TRUE;
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'order\']
= \'\';
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'rules\']
= array();
$i++;
$cfg[\'Servers\'][$i][\'host\'] = \'\';
$cfg[\'Servers\'][$i][\'port\'] = \'\';
$cfg[\'Servers\'][$i][\'socket\'] = \'\';
$cfg[\'Servers\'][$i][\'connect_type\'] = \'tcp\';
$cfg[\'Servers\'][$i][\'compress\'] = FALSE;
$cfg[\'Servers\'][$i][\'controluser\'] = \'\';
$cfg[\'Servers\'][$i][\'controlpass\'] = \'\';
$cfg[\'Servers\'][$i][\'auth_type\'] = \'config\';
$cfg[\'Servers\'][$i][\'user\'] = \'root\';
$cfg[\'Servers\'][$i][\'password\'] = \'\';
$cfg[\'Servers\'][$i][\'only_db\'] = \'\';
$cfg[\'Servers\'][$i][\'verbose\'] = \'\';
$cfg[\'Servers\'][$i][\'pmadb\'] = \'\'; // \'phpmyadmin\' - see scripts/create_tables.sql
$cfg[\'Servers\'][$i][\'bookmarktable\'] = \'\'; // \'pma_bookmark\'
$cfg[\'Servers\'][$i][\'relation\'] = \'\'; // \'pma_relation\'
$cfg[\'Servers\'][$i][\'table_info\'] = \'\'; // \'pma_table_info\'
$cfg[\'Servers\'][$i][\'table_coords\'] = \'\'; // \'pma_table_coords\'
$cfg[\'Servers\'][$i][\'pdf_pages\'] = \'\'; // \'pma_pdf_pages\'
$cfg[\'Servers\'][$i][\'column_info\'] = \'\'; // \'pma_column_info\'
$cfg[\'Servers\'][$i][\'history\'] = \'\'; // \'pma_history\'
$cfg[\'Servers\'][$i][\'verbose_check\'] = TRUE;
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'order\']
= \'\';
$cfg[\'Servers\'][$i][\'AllowDeny\'][\'rules\']
= array();
// If you have more than one server configured, you can set $cfg[\'ServerDefault\']
// to any one of them to autoconnect to that server when phpMyAdmin is started,
// or set it to 0 to be given a list of servers without logging in
// If you have only one server configured, $cfg[\'ServerDefault\'] *MUST* be
// set to that server.[color]=red]-----是否显示所有的MySQL服务器
$cfg[\'ServerDefault\'] = 1; // Default server (0 = no default server)
$cfg[\'Server\'] = \'\';
unset($cfg[\'Servers\'][0]);
/**
* Other core phpMyAdmin settings
*/
$cfg[\'OBGzip\'] = \'auto\'; // use GZIP output buffering if possible (TRUE|FALSE|\'auto\')-----有必要的话是否使用GZIP输出缓冲
$cfg[\'PersistentConnections\'] = FALSE; // use persistent connections to MySQL database-----是否使用MySQL持久连接，即pconnect
$cfg[\'ExecTimeLimit\'] = 300; // maximum execution time in seconds (0 for no limit)-----最大脚本执行时间，单位：秒
$cfg[\'SkipLockedTables\'] = FALSE; // mark used tables, make possible to show
// locked tables (since MySQL 3.23.30)
$cfg[\'ShowSQL\'] = TRUE; // show SQL queries as run-----运行查询时显示SQL查询语句
$cfg[\'AllowUserDropDatabase\'] = FALSE; // show a \'Drop database\' link to normal users-----是否对普通用户显示“删除数据库”连接
$cfg[\'Confirm\'] = TRUE; // confirm \'DROP TABLE\' & \'DROP DATABASE\'-----删除数据表/库前是否出现确认提示框
$cfg[\'LoginCookieRecall\'] = TRUE; // recall previous login in cookie auth. mode or not-----是否收回先前cookie认证模式的cookie
$cfg[\'UseDbSearch\'] = TRUE; // whether to enable the "database search" feature
// or not
$cfg[\'IgnoreMultiSubmitErrors\'] = FALSE; // if set to true, PMA continues computing multiple-statement queries
// even if one of the queries failed
$cfg[\'VerboseMultiSubmit\'] = TRUE; // if set to true, PMA will show the affected rows of EACH statement on
// multiple-statement queries. See the read_dump.php file for hardcoded
// defaults on how many queries a statement may contain!
$cfg[\'AllowArbitraryServer\'] = FALSE; // allow login to any user entered server in cookie based auth
在一个服务器上一般来讲都不止一个站点，更不止一个MySQL(和PHP搭配之最佳组合)数据库。
为了防止安全隐患，我们一般针对每个数据库都设置了独立的数据库访问帐号，该帐号仅有访问该数据库的权限。
详细参考：phpmyadmin中为每一个数据库指定独立的用户访问权限