wp-config.php文件是什么？
wp-config.php文件是wordpress建站的配置文件，里面有wordpress的数据库信息，语言信息。 wp-config.php 不是内建的文件，而是在安装过程中自动创建的文件。
开始操作
修改前请备份此文件，一旦错误，网站将不能正常访问，请立即用备份的文件进行恢复。
通过FTP软件，连接至源文件空间，wp-config.php位于网站根目录，和wp-content文件夹位于同一目录，参考下图：
了解 wp-config.php 文件
首先看一下完整的 wp-config.php 文件
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | <?php /** * The base configuration for WordPress * * The wp-config.php creation script uses this file during the * installation. You don't have to use the web site, you can * copy this file to "wp-config.php" and fill in the values. * * This file contains the following configurations: * * * MySQL settings * * Secret keys * * Database table prefix * * ABSPATH * * @link https://codex.wordpress.org/Editing_wp-config.php * * @package WordPress */ // ** MySQL settings - You can get this info from your web host ** // /** The name of the database for WordPress */ define('DB_NAME', 'database_name_here'); /** MySQL database username */ define('DB_USER', 'username_here'); /** MySQL database password */ define('DB_PASSWORD', 'password_here'); /** MySQL hostname */ define('DB_HOST', 'localhost'); /** Database Charset to use in creating database tables. */ define('DB_CHARSET', 'utf8'); /** The Database Collate type. Don't change this if in doubt. */ define('DB_COLLATE', ''); /**#@+ * Authentication Unique Keys and Salts. * * Change these to different unique phrases! * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service} * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again. * * @since 2.6.0 */ define('AUTH_KEY', 'put your unique phrase here'); define('SECURE_AUTH_KEY', 'put your unique phrase here'); define('LOGGED_IN_KEY', 'put your unique phrase here'); define('NONCE_KEY', 'put your unique phrase here'); define('AUTH_SALT', 'put your unique phrase here'); define('SECURE_AUTH_SALT', 'put your unique phrase here'); define('LOGGED_IN_SALT', 'put your unique phrase here'); define('NONCE_SALT', 'put your unique phrase here'); /**#@-*/ /** * WordPress Database Table prefix. * * You can have multiple installations in one database if you give each * a unique prefix. Only numbers, letters, and underscores please! */ $table_prefix = 'wp_'; /** * For developers: WordPress debugging mode. * * Change this to true to enable the display of notices during development. * It is strongly recommended that plugin and theme developers use WP_DEBUG * in their development environments. * * For information on other constants that can be used for debugging, * visit the Codex. * * @link https://codex.wordpress.org/Debugging_in_WordPress */ define('WP_DEBUG', false); /* That's all, stop editing! Happy blogging. */ /** Absolute path to the WordPress directory. */ if ( !defined('ABSPATH') ) define('ABSPATH', dirname(__FILE__) . '/'); /** Sets up WordPress vars and included files. */ require_once(ABSPATH . 'wp-settings.php'); |
数据库信息配置
数据库信息出现在wp-config.php 文件中 ‘MySQL Settings’ 的下方。您需要替换成自己的数据库信息，包含数据库地址，数据库用户名，数据库密码，数据库名称。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | // ** MySQL settings - You can get this info from your web host ** // /** The name of the database for WordPress */ define('DB_NAME', 'database_name_here'); /** MySQL database username */ define('DB_USER', 'username_here'); /** MySQL database password */ define('DB_PASSWORD', 'password_here'); /** MySQL hostname */ define('DB_HOST', 'localhost'); /** Database Charset to use in creating database tables. */ define('DB_CHARSET', 'utf8'); /** The Database Collate type. Don't change this if in doubt. */ define('DB_COLLATE', ''); |
数据库前缀
默认的是’wp_’， 可以修改成自己想要的。
1 2 3 4 5 6 7 | /** * WordPress Database Table prefix. * * You can have multiple installations in one database if you give each * a unique prefix. Only numbers, letters, and underscores please! */ $table_prefix = 'wp_'; |
使用wp-config.php文件修改wordpress网站的链接
当您需要更换域名，把网站转移到一个新的空间时，可以通过后台的设置更改wordpress的链接。
也可以通过修改 wp-config.php 文件来实现，只需在 wp-config.php 文件里添加下面两行代码就可以实现。
1 2 | define('WP_HOME','http://example.com'); define('WP_SITEURL','http://example.com'); |
改变文件上传路径
wordpress 默认将媒体文件上传到 /wp-content/uploads/ 路径，可以通过添加下面代码，上传到自定义文件夹中。
1 | define( 'UPLOADS', 'wp-content/media' ); |
禁止自动更新
wordpress从3.7版本开始，增加了自动更新的功能。自动更新对安全性有好处，但是有时候会出现一些错误，使网站不能正常访问。可以添加下面的代码禁止wordpress自动更新。
1 | define( 'WP_AUTO_UPDATE_CORE', false ); |
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