function custom_post_permalink_base() {
// Check if the current request is for a singular post
if ( is_singular( 'post' ) ) {
// Add a rewrite rule to handle /blog/ as the base
add_rewrite_rule(
'^blog/([^/]+)/?',
'index.php?name=$matches[1]',
'top'
);
}
}
add_action( 'init', 'custom_post_permalink_base' );