Remove Emoji from WordPress slugs

function pm_remove_emojis_from_slugs( $str ) {
    // Replace hexadecimal sequences with their corresponding Unicode characters
    $str = preg_replace_callback( '/x([0-9a-fA-F]{4,6})/i', function ( $matches ) {
        // Convert the hex to decimal, then to the corresponding Unicode character
        return mb_convert_encoding( pack( 'H*', $matches[1] ), 'UTF-8', 'UCS-4BE' );
    }, $str );

    // Remove remaining emojis using a regular expression
    $str = preg_replace( '/[\x{1F600}-\x{1F64F}\x{1F300}-\x{1F5FF}\x{1F900}-\x{1F9FF}\x{1F1E0}-\x{1F1FF}]/u', '', $str );

    // Remove widow & duplicated slashes
    $clean = preg_replace( '|-+|', '-', $str );
    $clean = preg_replace( '/([-]*[\/]+[-]*)/', '/', $clean );
    $clean = preg_replace( '/([\/]+)/', '/', $clean );

    // Trim slashes, dashes and whitespaces
    return trim( $clean, " /-" );
}
add_filter('wp_unique_post_slug', 'pm_remove_emojis_from_slugs', 100);