How to detect duplicate values in multidimensional associative array?

I have an associative multidimensional array:

Array
(
    [0] => Array
        (
            [customer_name] => John Dow
            [customer_email] => john@example.com
            [customer_mobile] => 1236547895
            [birth_date] => 12/1/1996
            [status] => Enable
        )

    [1] => Array
        (
            [customer_name] => Alex
            [customer_email] => alex@example.com
            [customer_mobile] => 4563214785
            [birth_date] => 19/1/1996
            [status] => Enable
        )

    [2] => Array
        (
            [customer_name] => Arina
            [customer_email] => arina@example.com
            [customer_mobile] => 963214785
            [birth_date] => 25/1/1996
            [status] => Enable
        )

    [3] => Array
        (
            [customer_name] => Atom
            [customer_email] => atom@example.com
            [customer_mobile] => 5214789632
            [birth_date] => 12/1/1998
            [status] => Enable
        )

    [4] => Array
        (
            [customer_name] => Jennifer
            [customer_email] => jennifer@example.com
            [customer_mobile] => 4563214785
            [birth_date] => 12/2/1996
            [status] => Enable
        )
)

Now I want to inspect similar values in customer_mobile and customer_email from each other to reduce redundancies. Contact number and email addresses must be non-redundant.

So please guide me, how can I achieve this? Thanks :)

Simple solution is:

<?php

$data = [
  [
    'name' => 'name 1',
    'phone' => '12341234',
    'email' => 'test@web.com'
  ],
  [
    'name' => 'name 2',
    'phone' => '12341234',
    'email' => 'test@web1.com'
  ],
  [
    'name' => 'name 3',
    'phone' => '4322342',
    'email' => 'test@web1.com'
  ],
  [
    'name' => 'name 4',
    'phone' => '1234123423',
    'email' => 'test@web1.com'
  ],
  [
    'name' => 'name 5',
    'phone' => '12341266634',
    'email' => 'test@eqweqwweb.com'
  ],
];

$phones = [];
$emails = [];
foreach ($data as $key => $contact) {
  if (array_search($contact['phone'], $phones) !== false || array_search($contact['email'], $emails) !== false) {
    unset($data[$key]);
  } else {
    $phones[] = $contact['phone'];
    $emails[] = $contact['email'];
  }
}

var_dump($data);

and in result you'll get:

array(3) {
  [0] =>
  array(3) {
    'name' =>
    string(6) "name 1"
    'phone' =>
    string(8) "12341234"
    'email' =>
    string(12) "test@web.com"
  }
  [2] =>
  array(3) {
    'name' =>
    string(6) "name 3"
    'phone' =>
    string(7) "4322342"
    'email' =>
    string(13) "test@web1.com"
  }
  [4] =>
  array(3) {
    'name' =>
    string(6) "name 5"
    'phone' =>
    string(11) "12341266634"
    'email' =>
    string(18) "test@eqweqwweb.com"
  }
}

this is just example.