Set WordPress Permalinks Settings From functions.php

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Permalinks are the permanent URLs to your individual WordPress or blog posts, as well as pages and other lists of blog postings. It's very important to have an easy and beautiful permalinks structure for your site, as it's a part of optimizing your site for SEO.

The default WordPress permalinks structure looks something like this:

http://www.whatever.com/?p=316

And I hate this as much as you all do. However, you can change the default structure of your blog permalinks in the settings of your WordPress blog. But we can also change the default permalinks structure from our functions.php file.

It's pretty easy, just add following snippet to your functions.php file:

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

Use this snippet to change the permalink settings from your functions.php file instead of in the admin area. You can replace the red area in above code with following structure codes:

%year%
    The year of the post, four digits, for example 2004

 %monthnum%
    Month of the year, for example 05

 %day%
    Day of the month, for example 28

 %hour%
    Hour of the day, for example 15

 %minute%
    Minute of the hour, for example 43

 %second%
    Second of the minute, for example 33

 %post_id%
    The unique ID # of the post, for example 423

 %postname%
    A sanitized version of the title of the post (post slug field on Edit Post/Page panel). So “This Is A Great Post!” becomes this-is-a-great-post in the URI.

 %category%
    A sanitized version of the category name (category slug field on New/Edit Category panel). Nested sub-categories appear as nested directories in the URI.

 %author%
    A sanitized version of the author name.

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