Дмитрий Дерепко

collection = [{ name: 'Apple',
  length: '5',
  id: '21',
  image: 'a2ff5' 
},{ name: 'Banana',
  length: '6',
  id: '22',
  image: 'e8za2'},{ name: 'Banana',
  length: '6',
  id: '22',
  image: 'e8za2'}
  ];
  
ids = [];

newCollection = collection.filter(el => {
  if (ids.includes(el.id)) {
    return true;
  }
  ids.push(el.id);
  
  return false;
})

console.log(newCollection)

$innerDRange = $_GET['inner_d_mm'];
[$leftPart, $rightPart] = explode(',', $innerDRange);

echo $innerDRange;
echo 'Inner Left Part: ' . $leftPart;
echo 'Inner Right Part: ' . $rightPart;

$values = [1 => 100, 2 => 200, 3 => 300];
foreach ($values as $key => &$value) {
    $value = $key;
}

print_r($values);

Array
(
    [1] => 1
    [2] => 2
    [3] => 3
)