3v4l.org

run code in 300+ PHP versions simultaneously

@ 2019-01-15T02:20:05Z

<?php

$a = [
  'owner' => [
    'table' => 'owner',
    'cols' => [
      'name' => 'Name',
      'address' => [
        'table' => 'Address',
        'cols' => [
          'line1' => 'Street Line 1',
          'line2' => 'Street Line 2',
          'city' => 'City',
          'state' => [
            'table' => 'State',
            'cols' => [
              'stateName' => 'State'
            ] 
          ],
          'postal_code' => 'Postal Code',
        ]
      ]
    ]
  ],
  'renter' => [
    'table' => 'renter',
    'cols' => [
      'name' => 'Name',
      'address' => [
        'table' => 'Address',
        'cols' => [
          'line1' => 'Street Line 1',
          'line2' => 'Street Line 2',
          'city' => 'City',
          'state' => [
            'table' => 'State',
            'cols' => [
              'stateName' => 'State'
            ] 
          ],
          'postal_code' => 'Postal Code',
        ]
      ]
    ]
  ]
];


function flatten(array $a, string $path = '') {
    if (isset($a['cols'])) {
        return flatten($a['cols'], $path);
    }
    
    $pairs = [];
    foreach ($a as $k => $v) {
        $p = empty($path) ? $k : "{$path}.{$k}";
        if (is_array($v)) {
            array_push($pairs, ...flatten($v, $p));
        } else {
            $pairs[] = ["key" => $p, "label" => $v];
        }
    }
    return $pairs;
}

var_dump(flatten($a));

/*
[
  [
    'key' => 'owner.name',
    'label' => 'Name'
  ],
  [
    'key' => 'owner.address.line1',
    'label' => 'Street Line 1'
  ],
  [
    'key' => 'owner.address.line2',
    'label' => 'Street Line 2'
  ],
  [
    'key' => 'owner.address.city',
    'label' => 'City'
  ],
  [
    'key' => 'owner.address.state.stateName',
    'label' => 'State'
  ],
  [
    'key' => 'owner.address.postal_code',
    'label' => 'Postal Code'
  ],
]
*/

Output for git.master, git.master_jit, rfc.property-hooks: array(12) { [0]=> array(2) { ["key"]=> string(10) "owner.name" ["label"]=> string(4) "Name" } [1]=> array(2) { ["key"]=> string(19) "owner.address.line1" ["label"]=> string(13) "Street Line 1" } [2]=> array(2) { ["key"]=> string(19) "owner.address.line2" ["label"]=> string(13) "Street Line 2" } [3]=> array(2) { ["key"]=> string(18) "owner.address.city" ["label"]=> string(4) "City" } [4]=> array(2) { ["key"]=> string(29) "owner.address.state.stateName" ["label"]=> string(5) "State" } [5]=> array(2) { ["key"]=> string(25) "owner.address.postal_code" ["label"]=> string(11) "Postal Code" } [6]=> array(2) { ["key"]=> string(11) "renter.name" ["label"]=> string(4) "Name" } [7]=> array(2) { ["key"]=> string(20) "renter.address.line1" ["label"]=> string(13) "Street Line 1" } [8]=> array(2) { ["key"]=> string(20) "renter.address.line2" ["label"]=> string(13) "Street Line 2" } [9]=> array(2) { ["key"]=> string(19) "renter.address.city" ["label"]=> string(4) "City" } [10]=> array(2) { ["key"]=> string(30) "renter.address.state.stateName" ["label"]=> string(5) "State" } [11]=> array(2) { ["key"]=> string(26) "renter.address.postal_code" ["label"]=> string(11) "Postal Code" } }

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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

preferences:dark modelive preview

70 ms | 404 KiB | 8 Q