Custom Rewrite Rules

Custom rewrite rules in WordPress allow you to define custom URLs for specific pages or posts on your site. This can be useful for creating more user-friendly URLs or for creating vanity URLs. Here’s an example code snippet to add custom rewrite rules in WordPress:

function wpsnippets_custom_rewrite_rules() {
    add_rewrite_rule( '^my-page$', 'index.php?page_id=123', 'top' );
    add_rewrite_rule( '^my-post/([^/]*)/?', 'index.php?p=456&my_var=$matches[1]', 'top' );
}

add_action( 'init', 'wpsnippets_custom_rewrite_rules' );

In this code snippet, we define a function wpsnippets_custom_rewrite_rules that sets two custom rewrite rules using the add_rewrite_rule function.

The first rewrite rule matches a URL of my-page and redirects it to the page with ID 123 using the page_id query variable. The second rewrite rule matches a URL of my-post/{post-slug} and redirects it to post ID 456 using the p query variable. We also capture any text after the / as the my_var query variable using the $matches array.

Note that the third parameter of add_rewrite_rule sets the position of the rewrite rule. In this example, we set it to top to make sure that the custom rules take priority over other rewrite rules.

Finally, we add the wpsnippets_custom_rewrite_rules function to the init action using the add_action function to ensure that the rewrite rules are added at the appropriate time during WordPress initialization.

With this code in place, visiting the URLs my-page and my-post/{post-slug} will redirect to the specified pages or posts on your site. You can modify the add_rewrite_rule function to match the URLs you want to redirect and the query variables you want to use.