wp-config.php Generator

Build a correct wp-config.php without copy-pasting from a 2014 blog post

在你的浏览器里运行。什么都不上传。

Database

Database name Database user Database host Table prefixChanging this on a NEW install is fine. Changing it on an existing site requires renaming tables and rewriting two option rows — it is not a config change.

Debugging

Enable WP_DEBUGLogs PHP notices, warnings and errors. Pairs with the two options below — never enable it alone on a live site. Write errors to wp-content/debug.logRecommended. Errors go to a file instead of the page. Hide errors from visitorsSets WP_DEBUG_DISPLAY false. Without this, WP_DEBUG prints PHP errors — including your server's absolute paths — to anyone loading the page. Log database queries (SAVEQUERIES)Useful when hunting a slow page. Costs memory on every request — turn it off again afterwards.

Hardening

Disable the theme & plugin file editorDISALLOW_FILE_EDIT. If an admin account is ever compromised, the built-in editor is how a PHP backdoor gets written. There is no good reason to leave it on. Force SSL for the admin areaFORCE_SSL_ADMIN. Only enable once HTTPS actually works, or you will lock yourself out. Enable automatic core updates

Limits

WP_MEMORY_LIMIT (MB) Post revisions to keep0 disables them. Unlimited revisions are the quiet reason many wp_posts tables get enormous.

wp-config.php

Salts are generated in your browser with crypto.getRandomValues(). They are never sent anywhere — but for the record, WordPress's own api.wordpress.org salt endpoint is equally fine; it returns fresh random values over TLS.

关于wp-config.php Generator

Generate a wp-config.php with the constants you actually need — debug logging, memory limits, file-edit lockdown, upload limits, table prefix, and fresh salts. Everything is generated in your browser; nothing is sent anywhere.

你可能还需要的其他工具

WP_DEBUG Configurator

Turn on the debug log without breaking your live site

Max Upload Size Fixer

Raise the upload limit — and get all three values consistent

WordPress .htaccess Generator

The rules WordPress needs, plus the hardening rules it does not ship with

FAQ

常见问题

在浏览器里生成 wp-config.php 的 salt 安全吗？

安全。这些 salt 是用 crypto.getRandomValues()（浏览器内置的密码学安全随机数生成器）生成的，永远不会离开你的机器。顺便说一句，WordPress 自家的 api.wordpress.org salt 接口同样安全——它通过 TLS 返回全新的随机值。这只是图个方便，并不是什么安全修复。

为什么它不问我的数据库密码？

因为你不该把生产环境的数据库密码输入到任何网页里，无论它声称自己多可信。生成的文件里有一个占位符——请在本地、在你的编辑器里填进去。

我能在一个已有的站点上更改表前缀吗？

光靠改 wp-config.php 是不行的。在正在运行的站点上更改 $table_prefix，需要重命名每一张表，并重写 options 和 usermeta 表里的两行数据。要改就在全新安装时改，否则就别动它。