existing table up migration in php artisan command code example

Example 1: add new column in laravel migration

Schema::table('table_name', function (Blueprint $table) {
            $table->string('column_name', 255)->nullable()->after('previous_column_name');
        });

Example 2: add new column in existing table in laravel migration

php artisan make:migration add_paid_to_users_table --table=users