The method of the two-dimensional array of PHP (which preserves the key values while removing duplicates)--the uniqueness of the two-D array

For the following two-dimensional array, it is required to be weighed:

$arr = Array ('
          0 ' =>array ('
                    name ' => ' James ', ' Age
                    ' =>30,
                    ),
          ' 1 ' =>array (
                    ' name ' = > ' Susu ',
                    ' age ' =>26,
                    ],
          ' 2 ' =>array (
                    ' name ' => ' James ',
                    ' age ' =>30,
                    ), '
          new ' =>array (
                    ' name ' => ' kube ',
                    ' age ' =>37,
                    ),
          ' list ' =>array (
                    ' name ' = > ' kube ',
                    ' age ' =>27,
                    )
          ;

1, the values in the one-dimensional array within the two-dimensional array cannot be exactly the same, deleting duplicates in them:

The code is as follows:

 -->Array (' name ' => ' James ', ' age ' =>30,), ' 1 ' =>arr 
                   Ay (' name ' => ' Susu ', ' age ' =>26,), ' 2 ' =>array ( 
                   ' Name ' => ' James ', ' age ' =>30,), ' New ' =>array ( 
                   ' Name ' => ' kube ', ' age ' =>37, ', ' List ' =>array (
' Name ' => ' kube ', ' age ' =>27,);   printf (before tranform the array:);
Outputs the original array print_r ($arr);
echo;   function More_array_unique ($arr =array ()) {foreach ($arr [0] as $k => $v) {$arr _inner_key[]= $k;    First, the key values of the inner array in the two-dimensional array are recorded in a one-dimensional array ($arras $k => $v) {$v =join (,, $v);      Implode () is also used to reduce the dimension $temp [$k] = $v;
    Keep the original key value $temp [] that is, do not retain the original key value} printf (after split the array:); Print_r($temp);
    The output-splitting array echo;    $temp =array_unique ($temp);   Go heavy: Remove the duplicated string foreach ($tempas $k => $v) {$a = explode (,, $v);  Split-after reorganization such as: Array ([0] => James [1] =>) $arr _after[$k]= array_combine ($arr _inner_key, $a);
Re-merge the original keys with the values}//ksort ($arr _after);//Sort as needed: Ksort the array to sort (keep the original key value key), sort to not keep the key value return$arr_after;  } $arr _new = More_array_unique ($arr);
    Call to go to the Redo function printf (Duplicate removal of the array:);
Print_r ($arr _new); echo;?>

Output results:

Before tranform the array://original arrays
Array ([0] => Array ([name] => James [age] => [1] => Array ([name] => Susu [age] =>) [2] => ; Array ([name] => James [age]=> [new] => Array ([name] => kube [age] => Notoginseng) [list] =>array ([Nam E] => kube [age] => 27))
After split the array://
Array ([0] => james,30 [1] => susu,26 [2] => james,30 [new] =>kube,37 [list] => kube,27)
Duplicate removal of TheArray://GO heavy after array
Array ([0] => Array ([name] => James [age] => [1] => Array ([name] => Susu [age] =>) [New] =& Gt Array ([name] => kube [age]=>) [list] => Array ([name] => kube [age] => 27))

2. A one-dimensional array within a two-dimensional array deletes duplicates because a key value cannot be the same:

/* For a certain key value to go to heavy * *

 
  $v)
    {
        if (In_array ($v [$key], $tmp _arr))   //Search $v[$key] is present in the $tmp_arr array, if present returns True
        {
            unset ($arr [ $k]); Destroy a variable  if the same value already exists in $tmp_arr the value
        }
        else {
            $tmp _arr[$k] = $v [$key];  Place different values in the array to save
        }
   //ksort ($arr);//ksort function to sort (keep the original key value key) sort  is not to keep the key value return
    $arr;
   }
   $key = ' name ';
   $arr _key = Second_array_unique_bykey ($arr, $key);
   printf (
As for the givenkey->%s:, $key);
   Print_r ($arr _key);
   echo 
;
? >

Output results:

As for the given Key->name:
Array ([0] => Array ([name] => James [age] => [1] => Array ([name] => Susu [age] =>) [New] =& Gt Array ([name] => kube [age]=> 37))