how to change the permalink in wordpress without plugins ?

how to change the permalink in wordpress

Generally we set wordpress permalink from setting option. but if you try you can set permalink in your wordpress without setting option. but do you know? how to change the permalink in wordpress without any plugins? for this you need some code. if you want to get this then follow bellow steps:
1. At first go to your wordpress sites admin panel.
2. Choose edit on your current theme.
3. Then select ‘functions.php’ file.
4. Now copy bellow code

// set permalink
function set_permalink(){
global $wp_rewrite;
$wp_rewrite->set_permalink_structure('/%year%/%monthnum%/%postname%/');
}
add_action('init', 'set_permalink');

PROBLEM COPY? TRY HERE!!
5. After copy code paste in your current themes 'functions.php' file and save.
Now your permalink is changed. i am sharing bellow some permalink structure for you. please see this:

/%year%/%monthnum%/%day%/%postname%/
/%year%/%monthnum%/%postname%/
/archives/%post_id%
/%postname%/

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