Answers for "laravel migration alter existing column"

laravel migration add column to existing table

php artisan make:migration add_paid_to_users_table --table=users
  
public function up()
{
    Schema::table('users', function($table) {
        $table->integer('paid');
    });
}

public function down()
{
    Schema::table('users', function($table) {
        $table->dropColumn('paid');
    });
}

php artisan migrate

add column in laravel migration cmnd

php artisan make:migration add_paid_to_users_table --table=users

how to change the colum type in migration laravel

public function changeColumnType($table, $column, $newColumnType) {                
    DB::statement("ALTER TABLE $table CHANGE $column $column $newColumnType");
}