Php Data Structure Problems

First: 3 elements; Second: 2 elements; Third: How do two elements generate a format like {code? The number of types and the number of elements of each type can be changed. For example, the first type is 2 elements. The second type is 1 element. The third type is 2 elements. The fourth type is 2 elements: the three elements become {code... first: Three Elements
2: 2 Elements
Third: two elements

How to generate

0-0-00-0-10-1-00-1-11-0-01-0-11-1-01-1-12-0-02-0-12-1-02-1-1

What about this format?

The number of types and the number of elements of each type are variable, such

First: two elements
Type 2: 1 Element
Third: two elements
Fourth: Three Elements

It becomes

0-0-0-0....2-0-1-2

What about this format?

Reply content:

First: Three Elements
2: 2 Elements
Third: two elements

How to generate

0-0-00-0-10-1-00-1-11-0-01-0-11-1-01-1-12-0-02-0-12-1-02-1-1

What about this format?

The number of types and the number of elements of each type are variable, such

First: two elements
Type 2: 1 Element
Third: two elements
Fourth: Three Elements

It becomes

0-0-0-0....2-0-1-2

What about this format?

Isn't this a normal remainder? Just an ordinary array. You can use an auto-incrementing integer to repeatedly retrieve the remainder to list all the combinations.

Http://3v4l.org/rnOU4

php
  = 1) {            break;        } else {            $results[] = $result;            $i++;        }    }    return $results;}

The business environment is not clear ~ What are you talking about ~