将.htaccess重写规则转换为PHP（Pantheon环境WordPress站点）

Hey there! I know dealing with regex and server configs can feel overwhelming, especially when Pantheon’s Nginx ignores .htaccess rules. Let’s turn those Nginx rewrite rules into working PHP code you can drop right into your wp-config.php file.

Here's the complete code to add to your wp-config.php #

Make sure to place this before the line that says /* That's all, stop editing! Happy publishing. */:

add_action('parse_request', function($wp) {
    // Grab the current request URI
    $request_uri = $_SERVER['REQUEST_URI'];
    
    // Handle sitemap.xml or sitemap-xxx.xml
    if (preg_match('#^/sitemap(-+([a-zA-Z0-9_-]+))?\.xml$#', $request_uri, $matches)) {
        $param = isset($matches[2]) ? $matches[2] : '';
        $wp->query_vars['xml_sitemap'] = "params={$param}";
        $wp->request = 'index.php';
        return;
    }
    
    // Handle sitemap.xml.gz or sitemap-xxx.xml.gz
    if (preg_match('#^/sitemap(-+([a-zA-Z0-9_-]+))?\.xml\.gz$#', $request_uri, $matches)) {
        $param = isset($matches[2]) ? $matches[2] : '';
        $wp->query_vars['xml_sitemap'] = "params={$param};zip=true";
        $wp->request = 'index.php';
        return;
    }
    
    // Handle sitemap.html or sitemap-xxx.html (completed based on your partial rule)
    if (preg_match('#^/sitemap(-+([a-zA-Z0-9_-]+))?\.html$#', $request_uri, $matches)) {
        $param = isset($matches[2]) ? $matches[2] : '';
        // Adjust the query string here if your actual target is different
        $wp->query_vars['xml_sitemap'] = "params={$param};format=html";
        $wp->request = 'index.php';
        return;
    }
});

What this code does: #

• We use WordPress’s parse_request action to intercept incoming requests before they’re fully processed.
• Each preg_match checks the request URI against your original Nginx regex (adjusted for PHP syntax).
• For matching requests, we set the xml_sitemap query variable exactly like your Nginx rules did—including handling the optional xxx parameter and the zip=true flag for gzipped sitemaps.
• We tell WordPress to route the request to index.php so your sitemap plugin can handle the query parameters properly.

A quick note on the partial third rule: #

Your original third rewrite rule was cut off, so I assumed it should point to a similar query string with an HTML format flag. If your actual target is different (like a unique query parameter), just modify the line starting with $wp->query_vars['xml_sitemap'] in that last block to match what you need.

内容的提问来源于stack exchange，提问作者joakland