按值（a）对多维数组进行分组，并按值（b）对每个组进行排序

Question

I have an array containing fruits and vegetables that are all mixed together. I would like to group each item by their type ie 'vegetable' (indicated by value = 1) or 'fruit'(indicated by value = 2) and then have each item positioned in the order assigned to it.

Here is my starting array:

array(3) {
  [0]=>
  array(16) {
    ["name"]=> "apples"
    ["position"]=> "1"
    ["basket"]=> "2"
  }
  [1]=>
  array(16) {
    ["name"]=> "potatoes"
    ["position"]=> "2"
    ["basket"]=> "1"
  }
  [2]=>
  array(16) {
    ["name"]=> "onions"
    ["position"]=> "1"
    ["basket"]=> "1"
  }
  [3]=>
  array(16) {
    ["name"]=> "oranges"
    ["position"]=> "3"
    ["basket"]=> "2"
  }
  [4]=>
  array(16) {
    ["name"]=> "tomatoes"
    ["position"]=> "4"
    ["basket"]=> "1"
  }
  [5]=>
  array(16) {
    ["name"]=> "grapes"
    ["position"]=> "5"
    ["basket"]=> "2"
  }
  [6]=>
  array(16) {
    ["name"]=> "avocado"
    ["position"]=> "2"
    ["basket"]=> "2"
  }
  [7]=>
  array(16) {
    ["name"]=> "bean"
    ["position"]=> "5"
    ["basket"]=> "1"
  }
  [8]=>
  array(16) {
    ["name"]=> "pineapple"
    ["position"]=> "4"
    ["basket"]=> "2"
  }
  [9]=>
  array(16) {
    ["name"]=> "pepper"
    ["position"]=> "3"
    ["basket"]=> "1"
  }
}

Here is the result I am wanting to achieve:

array(3) {
  [0]=>
  array(16) {
    ["name"]=> "onions"
    ["position"]=> "1"
    ["basket"]=> "1"
  }
  [1]=>
  array(16) {
    ["name"]=> "potatoes"
    ["position"]=> "2"
    ["basket"]=> "1"
  }
  [2]=>
  array(16) {
    ["name"]=> "pepper"
    ["position"]=> "3"
    ["basket"]=> "1"
  }
  [3]=>
  array(16) {
    ["name"]=> "tomatoes"
    ["position"]=> "4"
    ["basket"]=> "1"
  }
  [4]=>
  array(16) {
    ["name"]=> "bean"
    ["position"]=> "5"
    ["basket"]=> "1"
  }
  [5]=>
  array(16) {
    ["name"]=> "apples"
    ["position"]=> "1"
    ["basket"]=> "2"
  }
  [6]=>
  array(16) {
    ["name"]=> "avocado"
    ["position"]=> "2"
    ["basket"]=> "2"
  }
  [7]=>
  array(16) {
    ["name"]=> "oranges"
    ["position"]=> "3"
    ["basket"]=> "2"
  }
  [8]=>
  array(16) {
    ["name"]=> "pineapple"
    ["position"]=> "4"
    ["basket"]=> "2"
  }
  [9]=>
  array(16) {
    ["name"]=> "grapes"
    ["position"]=> "5"
    ["basket"]=> "2"
  }
}

In the 'hopeful' result, it can be seen that there are 2 groups for the field 'basket', namely 1 & 2 and therefore the array must be "ordered" that it is 'grouped' in sequence.

Finally, each 'group' item must then be sorted in its own sequence.

This is what I have thus far:

uasort($array, function($a, $b) {return $a['basket'] - $b['basket'];});

Can I adapt this to suit my need?

Answer 1

Starting in PHP 5.3, one can use an anonymous function:

uasort($array, function($a,$b)
    {
        return $a['basket'] - $b['basket'] ?: $a['position'] - $b['position'];
    });

LIVE DEMO

This is combined with solutions provided by B. Desai & Casimir et Hippolyte