Bulk 301 redirect for custom post type

Since job-location is a variable part – which content we do not know beforehand – it is not possible to easily solve this in a .htaccess redirect. You could however generate a list of posts with their old and new URI and place those redirects in the .htaccess – I would prefer it that way because then PHP is not needed at all.

If that is not an option, the following should work

add_action('wp_loaded', 'WPSE_redirect_jobs_new_url');
function WPSE_redirect_jobs_new_url(){
    // current request
    $uri = $_SERVER['REQUEST_URI'];

    $parts = explode("https://wordpress.stackexchange.com/", $uri);
    if (substr($uri, 0, 6) !== '/jobs/' || count($parts) > 3) {
        // either URI does not start with jobs
        // or URI is already longer than /jobs/foo
        // so end early
        return;
    }

    $slug = array_pop($parts);
    $page = get_page_by_path($slug, OBJECT, 'MY_CPT');

    if (!$page instanceof WP_Post) {
        return;
    }

    // get new link
    $link = get_permalink($page->ID);

    wp_redirect($link, 301);
    exit;
});

Because WordPress has its own way of guessing redirects, it is important to use an early action. In my test, wp_loaded sufficed for this. Sadly, the global $wp is not fully populated by that time, so here I am checking the requested URI via $_SERVER['REQUEST_URI'] instead of $wp->request.

This of course relies on permalinks being set up for jobs as you wish them, otherwise get_permalink() will not yield the results you’re looking for.

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