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@ 2015-10-28T21:01:47Z

<?php

$array = array (
  '#attached' => 
  array (
    'library' => 
    array (
      0 => 'system/base',
      1 => 'classy/base',
      2 => 'core/normalize',
    ),
    'html_head_link' => 
    array (
      0 => 
      array (
        0 => 
        array (
          'rel' => 'shortcut icon',
          'href' => 'http://127.0.0.1/core/misc/favicon.ico',
          'type' => 'image/vnd.microsoft.icon',
        ),
      ),
    ),
    'html_head' => 
    array (
      0 => 
      array (
        0 => 
        array (
          '#tag' => 'meta',
          '#attributes' => 
          array (
            'charset' => 'utf-8',
          ),
          '#weight' => -1000,
        ),
        1 => 'system_meta_content_type',
      ),
      1 => 
      array (
        0 => 
        array (
          '#type' => 'html_tag',
          '#tag' => 'meta',
          '#attributes' => 
          array (
            'name' => 'Generator',
            'content' => 'Drupal 8 (https://www.drupal.org)',
          ),
        ),
        1 => 'system_meta_generator',
      ),
      2 => 
      array (
        0 => 
        array (
          '#tag' => 'meta',
          '#attributes' => 
          array (
            'name' => 'MobileOptimized',
            'content' => 'width',
          ),
        ),
        1 => 'MobileOptimized',
      ),
      3 => 
      array (
        0 => 
        array (
          '#tag' => 'meta',
          '#attributes' => 
          array (
            'name' => 'HandheldFriendly',
            'content' => 'true',
          ),
        ),
        1 => 'HandheldFriendly',
      ),
      4 => 
      array (
        0 => 
        array (
          '#tag' => 'meta',
          '#attributes' => 
          array (
            'name' => 'viewport',
            'content' => 'width=device-width, initial-scale=1.0',
          ),
        ),
        1 => 'viewport',
      ),
    ),
  ),
);

function system_module_test_page_attachments_alter(&$page) {
  // Remove the HTML5 mobile meta-tags.
  $meta_tags_to_remove = ['MobileOptimized', 'HandheldFriendly', 'viewport', 'cleartype'];
  foreach ($page['#attached']['html_head'] as $index => $parts) {
    if (in_array($parts[1], $meta_tags_to_remove)) {
      unset($page['#attached']['html_head'][$index]);
    }
  }
}

function processHtmlHead(array $html_head) {
    $head = [];
    foreach ($html_head as $index => $item) {
      list($data, $key) = $item;
      if (!isset($data['#type'])) {
        $data['#type'] = 'html_tag';
      }
      $head[$key] = $data;
    }
    return $head;
  }


system_module_test_page_attachments_alter($array);

$attached = $array['#attached'];

$head = processHtmlHead($attached['html_head']);

print_r($array);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [#attached] => Array ( [library] => Array ( [0] => system/base [1] => classy/base [2] => core/normalize ) [html_head_link] => Array ( [0] => Array ( [0] => Array ( [rel] => shortcut icon [href] => http://127.0.0.1/core/misc/favicon.ico [type] => image/vnd.microsoft.icon ) ) ) [html_head] => Array ( [0] => Array ( [0] => Array ( [#tag] => meta [#attributes] => Array ( [charset] => utf-8 ) [#weight] => -1000 ) [1] => system_meta_content_type ) [1] => Array ( [0] => Array ( [#type] => html_tag [#tag] => meta [#attributes] => Array ( [name] => Generator [content] => Drupal 8 (https://www.drupal.org) ) ) [1] => system_meta_generator ) ) ) )

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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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