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@ 2022-10-24T20:19:11Z

<?php

$arr = array (
  0 => 
  array (
    'id' => '1',
    'p_pag' => '0',
    'link' => 'Contact',
    'children' => 
    array (
      0 => 
      array (
        'id' => '2',
        'p_pag' => '1',
        'link' => 'Contact-County',
        'children' => 
        array (
          0 => 
          array (
            'id' => '3',
            'p_pag' => '2',
            'link' => 'Contact-Town-1',
            'children' => 
            array (
            ),
          ),
        ),
      ),
    ),
  ),
);

$searchId = 3;
$link = null;

$iterator =  new \RecursiveIteratorIterator(
      new \RecursiveArrayIterator($arr),\RecursiveIteratorIterator::SELF_FIRST
);

foreach($iterator as $subarr){
  if(is_array($subarr) && array_key_exists('id',$subarr) && $subarr['id'] == $searchId){
    $link = $subarr['link']; 
    break;
  }
}

echo $link ? $link : 'not found';

Output for git.master_jit, git.master, rfc.property-hooks: Contact-Town-1

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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