Answers for "dropping and adding a new foriegin id column in laravel migration"

foreign id laravel migration

$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

laravel migration add column after

Schema::table('users', function ($table) {
    $table->string('email')->after('id')->nullable();
});