如何通过.htaccess将带查询字符串的index.php流量重定向至指定路径

Alright, let's solve this redirect problem exactly as you need it. The core requirement is to only redirect domain.com/index.php requests that have either a query string (like ?topic=11841.0) or path info (like /board,200.0.html) to domain.com/forum/index.php, while keeping all other site traffic unaffected. Below are solutions for the two most common web servers:

Apache (using mod_rewrite) #

Add these rules to your .htaccess file (or server config) in the root directory of domain.com:

RewriteEngine On

# Redirect index.php with query string OR path info to /forum/index.php
RewriteCond %{REQUEST_URI} ^/index\.php$
RewriteCond %{QUERY_STRING} .+ [OR]
RewriteCond %{REQUEST_URI} ^/index\.php/.+
RewriteRule ^index\.php(.*)$ /forum/index.php$1 [R=302,L]

Rule Breakdown: #

• RewriteEngine On: Enables mod_rewrite functionality.
• First RewriteCond: Ensures we're only targeting requests exactly for /index.php.
• Second RewriteCond: Checks if there's a non-empty query string (.+ means at least one character). The [OR] connects it to the next condition.
• Third RewriteCond: Catches requests where /index.php has additional path info (like /board,200.0.html appended).
• RewriteRule: Maps the original /index.php (plus any path info) to /forum/index.php, preserving the query string automatically. Use R=301 instead of 302 once you've tested the redirect works correctly (for permanent redirects).

Nginx #

Add this configuration inside your server block for domain.com:

server {
    server_name domain.com;

    # Handle targeted redirect for index.php
    location = /index.php {
        # Redirect if there's a query string
        if ($query_string != "") {
            return 302 /forum/index.php$is_args$args;
        }
        # Redirect if there's path info appended to index.php
        if ($request_uri ~* ^/index\.php/.+) {
            rewrite ^/index\.php(/.*)$ /forum/index.php$1 redirect;
        }
        # Allow normal access to index.php with no query string/path info
        try_files $uri $uri/ =404;
    }

    # Add your other site configurations here (e.g., PHP processing, static files)
}

Config Breakdown: #

• location = /index.php: Exact match for requests to /index.php.
• First if block: Triggers a redirect if the query string isn't empty. $is_args adds a ? only if there are arguments, and $args preserves the original query string.
• Second if block: Uses a regex to match /index.php with appended path info, then rewrites the URL to include that path info in the /forum/ version.
• try_files: Lets requests to /index.php with no extra data pass through normally (no redirect).

Note: Use permanent instead of redirect in the rewrite rule (or 301 instead of 302 in the return statement) once you've verified the redirect behaves as expected.

内容的提问来源于stack exchange，提问作者Raveen W