PHP multidimensional array de-weight, how to solve

PHP multidimensional array de-weight
PHP multi-dimensional array de-weight, how to remove the name of the extra one?
Array
(
[0] = = Array
(
[id] = 79
[Name] = a
)

[1] = = Array
(

[id] = 79
[Name] = a
)
[2] = = Array
(
[id] = 78
[Name] = b
)
[3] = = Array
(

[id] = 36
[Name] = C
)
)
------to solve the idea----------------------

$ar = Array (
  
  Array (
    ' id ' = ' 79 ',
    ' Name ' = ' a ',
  ),
  
  Array (
    ' id ' = ' 79 ',
    ' Name ' = ' a ',
  ),
  
  Array (
    ' id ' = ' 78 ',
    ' Name ' = ' B ',
  ),
  
  Array (
    ' id ' = ' 36 ',
    ' Name ' = ' C ',
  ),
);
foreach ($ar as $k = = $f) {
  foreach ($ar as $p + $t) if ($k! = $p && $f = = $t) unset ($ar [$k]);
}
Print_r ($ar);

Array
(
    [1] = = Array
        (
            [id] = 79
            [Name] = a
        )

    [2] = = Array
        (
            [id] = 78
            [Name] = b
        )

    [3] = = Array
        (
            [id] = 36
            [Name] = C
        )

)

------to solve the idea----------------------

$arr =array (
     0=>array (
        ' ID ' =>79,
        ' Name ' = ' a '
         ),
     1=>array (
        ' ID ' =>79,
        ' Name ' = ' a '

      ),
     2=>array (
        ' ID ' =>78,
        ' Name ' = ' B '
     ),
     3=>array (
        ' ID ' =>36,
        ' Name ' = ' C '
     ),
);
$item =array ();
foreach ($arr as $k = = $v) {
    if (!isset ($item [$v [' ID ']]) $item [$v [' id ']]= $v;
}
Print_r (Array_values ($item));

Array
(
    [0] = = Array
        (
            [id] = 79
            [Name] = a
        )

    [1] = = Array
        (
            [id] = 78
            [Name] = b
        )

    [2] = = Array
        (
            [id] = 36
            [Name] = C
        )

)

------to solve the idea----------------------

 
  
$ar = Array (
  
  Array (
    ' id ' = ' 79 ',
    ' Name ' = ' a ',
  ),
  
  Array (
    ' id ' = ' 79 ',
    ' Name ' = ' a ',
  ),
  
  Array (
    ' id ' = ' 78 ',
    ' Name ' = ' B ',
  ),
  
  Array (
    ' id ' = ' 36 ',
    ' Name ' = ' C ',
  ),
);


$temp =array ();
$result =array ();

foreach ($ar as $item) {
$temp [] = Json_encode ($item);
}

$temp = Array_unique ($temp);

foreach ($temp as $item) {
$result [] = Json_decode ($item, true);
}

Var_dump ($result);

Just providing new ideas is inefficient.

Array (3) {
  [0]=>
  Array (2) {
    ["id"]=>
    String (2) "79"
    ["Name"]=>
    String (1) "a"
  }
  [1]=>
  Array (2) {
    ["id"]=>
    String (2) "78"
    ["Name"]=>
    String (1) "B"
  }
  [2]=>
  Array (2) {
    ["id"]=>
    String (2) "36"
    ["Name"]=>
    String (1) "C"
  }
}

------to solve the idea----------------------
SELECT DISTINCT (' id ') as ' id ', name from ' TABLE '

