基于产品变体数组创建规则数组

Question

I have this product variations array:

array:3 [
  0 => array:2 [
    0 => "2_12"
    1 => "4_9"
  ]
  1 => array:2 [
    0 => "2_3"
    1 => "4_9"
  ]
  2 => array:2 [
    0 => "2_4"
    1 => "4_10"
  ]
]

and need to create some rules from it.

Each array contain a product variation and each element is made from option_value.

ex: the first array: [2_12, 4_9] => [color_purple, material_cotton]

I want to create another array that contains each element combination based on that array.

ex: I want to see color_purple (2_12) what materials is combined with, material_cotton what colors is combined with...and so on.

Like this:

array:5 [
  "2_12" => array:1 [
    0 => "4_9"    
  ]
  "2_3" => array:1 [   
    0 => "4_9"
  ]
  "2_4" => array:1 [    
    0 => "4_10"
  ]
  "4_9" => array:2 [    
    0 => "2_12"
    1 => "2_3"
  ]
  "4_10" => array:1 [    
    0 => "2_4"
  ]
]

How to crate this last array based on the product variations array?

Answer 1

I created the array..... probably not the best solution...but works.

Still if you got a better approach.... just post it:)

Based on the variations array:

    $rules = array();
    foreach ($variations as $variation) {
        foreach ($variation as $index => $v) {
            $nextIndex = ++$index;
            if(!isset($rules[$v])){
                $rules[$v] = array();
                if(isset($variation[$nextIndex])){
                   array_push($rules[$v],$variation[$nextIndex]);
                }
            } else {
                if(isset($variation[$nextIndex])){
                    array_push($rules[$v],$variation[$nextIndex]);
                }
            }
        }

        $variation = array_reverse($variation);
        foreach ($variation as $index => $v) {
            $nextIndex = ++$index;
            if(isset($variation[$nextIndex])){
                array_push($rules[$v],$variation[$nextIndex]);
            }
        }
    }

and the rules array looks like this:

array:5 [
  "2_12" => array:1 [
    0 => "4_9"
  ]
  "4_9" => array:2 [
    0 => "2_12"
    1 => "2_3"
  ]
  "2_3" => array:1 [
    0 => "4_9"
  ]
  "2_4" => array:1 [
    0 => "4_10"
  ]
  "4_10" => array:1 [
    0 => "2_4"
  ]
]