WordPress - Get Current Post

functions.php

/** 
 * get_current_post
 * 
 * Static method for getting the current post
 * 
 * @since 7.3
 * @access public
 * @author Kevin Pirnie <[email protected]>
 * @package Kevin's Framework
 * 
 * @return WP_Post Returns a nullable WP_post object for the current post being browsed
 * 
*/
public function get_current_post( ) : ?WP_Post {

	// let's get our post global
	global $post;

	// if it's empty, let's try to retrieve it based on the post querystring
	if ( empty( $post ) && is_array( $_GET ) ) {

		$post = ( ! empty( $_GET['post'] ) ) ? get_post( sanitize_key( $_GET['post'] ) ) : null;
	}

	// Optional: get an empty post object from the post_type
	if ( empty( $post ) && is_array( $_GET ) ) {

		// default standard class object
		$object = new stdClass( );
		
		// set the objects post type
		$object -> post_type = ( ! empty( $_GET['post_type'] ) ) ? get_post( sanitize_key( $_GET['post_type'] ) ) : null;
		
		// return a new WP Pot object
		return new WP_Post( $object );
	}

	// now... if our post object is still empty, let's try to figure it out via the URL
	if ( empty( $post ) ) {

		// grab our WP global
		global $wp;

		// try to get the current URL
		$current_url = home_url( add_query_arg( array( ), $wp -> request ) );

		// try to get the post ID, from the URL
		$current_post_id = url_to_postid( $current_url );

		// get the post
		$post = get_post( $current_post_id );
	}

	// one more check if post is still empty.  generally this means we're on the configured blog page
	if ( empty( $post ) ) {

		// get the post
		$post = get_post( ( int ) get_option( 'page_for_posts' ) );
	}

	// return the WP Post object
	return $post;

}