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  1. <?php
  2.  
  3. $cars = array_map(function ($id) {
  4. 	return [
  5. 		'ID' => $id,
  6. 		'title' => 'FooBar'.$id
  7. 	];
  8. }, [1, 2, 2, 3, 5]);
  9.  
  10. $cars = array_values(array_reduce($cars, function ($result, $item) {
  11.     $result[$item['ID']] = $item;
  12.     return $result;
  13. }, []));
  14.  
  15. var_dump($cars);
Success #stdin #stdout 0.01s 20568KB
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stdin
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Standard input is empty
stdout
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array(4) {
  [0]=>
  array(2) {
    ["ID"]=>
    int(1)
    ["title"]=>
    string(7) "FooBar1"
  }
  [1]=>
  array(2) {
    ["ID"]=>
    int(2)
    ["title"]=>
    string(7) "FooBar2"
  }
  [2]=>
  array(2) {
    ["ID"]=>
    int(3)
    ["title"]=>
    string(7) "FooBar3"
  }
  [3]=>
  array(2) {
    ["ID"]=>
    int(5)
    ["title"]=>
    string(7) "FooBar5"
  }
}
https://ideone.com/brRVQJ
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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