Remove duplicate array from multidimensional array in php

To remove duplicates from a multidimensional array in PHP, you can use the following approach:

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1 Here’s an example code to remove duplicates from a 2-dimensional array:

2 This will remove any duplicates from the input array, and give you the following output:

• Convert the multidimensional array into a single-dimensional array using array_map() and array_merge() functions.
• Use the array_unique() function to remove duplicates from the single-dimensional array.
• Convert the single-dimensional array back into a multidimensional array using the original array’s structure.
•  

Here’s an example code to remove duplicates from a 2-dimensional array:

<?php

$input = array(
  array(1, 2, 3),
  array(2, 3, 4),
  array(3, 4, 5),
  array(1, 2, 3)
);

// Convert the input array into a single-dimensional array
$flattened = array_map('serialize', $input);
$flattened = array_unique($flattened);

// Convert the single-dimensional array back into a multidimensional array
$result = array_map('unserialize', $flattened);

print_r($result);

?>

This will remove any duplicates from the input array, and give you the following output:

Array
(
  [0] => Array
  (
    [0] => 1
    [1] => 2
    [2] => 3
  )

  [1] => Array
  (
    [0] => 2
    [1] => 3
    [2] => 4
  )

  [2] => Array
  (
    [0] => 3
    [1] => 4
    [2] => 5
  )
)