if exist table then add collumn check in migration laravel code example

Example: laravel migration check if table has column

// You may check for the existence of a table or column
// using the hasTable and hasColumn methods:

if (Schema::hasTable('users')) {
    // The "users" table exists...
}

if (Schema::hasColumn('users', 'email')) {
    // The "users" table exists and has an "email" column...
}