After looping through a separate query, this function restores the $post global to the current post in the main query.

Signature

wp_reset_postdata()

Return

(void)

Source

function wp_reset_postdata() {
	global $wp_query;

	if ( isset( $wp_query ) ) {
		$wp_query->reset_postdata();
	}
}
WP Trac GitHub

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