add_rewrite_rule() WP 1.0

Adds a rewrite rule that transforms a URL structure to a set of query vars.

Any value in the $after parameter that isn't 'bottom' will result in the rule being placed at the top of the rewrite rules.

1 time = 0.000001s = speed of light | 50000 times = 0.03s = speed of light | PHP 7.1.11, WP 4.9.8

No Hooks.

Null. Nothing.

add_rewrite_rule( $regex, $query, $after );

$regex(string) (required): Regular expression to match request against.
$query(string/array) (required): The corresponding query vars for this rewrite rule.
$after(string): Priority of the new rule. Accepts 'top' or 'bottom'.
Default: 'bottom'

Since 2.1.0	Introduced.
Since 4.4.0	Array support was added to the `$query` parameter.

<?php
function add_rewrite_rule( $regex, $query, $after = 'bottom' ) {
	global $wp_rewrite;

	$wp_rewrite->add_rule( $regex, $query, $after );
}