how to create wordpress shortcodes

1. Open your theme's functions.php file in a text editor.
2. Add the following code to create a shortcode:

function my_custom_shortcode_function( $atts ) {
    // Your shortcode processing here
}
add_shortcode( 'my_shortcode', 'my_custom_shortcode_function' );

1. Replace "my_custom_shortcode_function" with the name of your custom function and "my_shortcode" with the desired shortcode tag.
2. Within the function, process the $atts parameter to customize the shortcode output.
3. Save the functions.php file and upload it to your WordPress theme directory.