Vlak 8.10 van PHP-probleemboek

Задание 1

Gegee 'n vorm met twee insette. Nommers word in die insette ingevoer. Met die indiening van die vorm, kontroleer, of hierdie nommers vriendelik is of nie.

Задание 2

Gegee 'n sekere skikking:

php<?php
  $arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
?>

Gegee 'n veranderlike:

php<?php
  $n = 3;
?>

Verander hierdie skikking in 'n tweedimensionele een, met $n elemente per subskikking.

Задание 3

Gegee 'n skikking:

php[
  [1, 2, 3, 4, 5],
  [1, 2, 3],
  [1, 2],
]

Voeg by elke subskikking soveel leë stringe toe dat die aantal elemente in elke subskikking gelyk word aan die aantal elemente in die langste subskikking.

Задание 4

Gegee 'n lys van sekere data vir bepaalde datums, gestoor in die volgende struktuur:

php<?php
  $data = [
    [
      'year' =>  2019,
      'month' => 11,
      'day' => 20,
      'data' => ['array with data']
    ],
    [
      'year' =>  2019,
      'month' => 11,
      'day' => 21,
      'data' => ['array with data']
    ],
    [
      'year' =>  2019,
      'month' => 12,
      'day' => 25,
      'data' => ['array with data']
    ],
    [
      'year' =>  2019,
      'month' => 12,
      'day' => 26,
      'data' => ['array with data']
    ],
    [
      'year' =>  2020,
      'month' => 10,
      'day' => 29,
      'data' => ['array with data']
    ],
    [
      'year' =>  2020,
      'month' => 10,
      'day' => 30,
      'data' => ['array with data']
    ],
    [
      'year' =>  2020,
      'month' => 11,
      'day' => 19,
      'data' => ['array with data']
    ],
    [
      'year' =>  2020,
      'month' => 11,
      'day' => 20,
      'data' => ['array with data']
    ],
  ]
?>

Skryf kode wat die data struktuur omskep in 'n struktuur van die vorm:

php[
  year1: [
    month1: [
      day1: [array of data],
      day2: [array of data],
      day3: [array of data],
    ],
    month2: [
      day1: [array of data],
      day2: [array of data],
      day3: [array of data],
    ]
  ]
  year2: [
    month1: [
      day1: [array of data],
      day2: [array of data],
      day3: [array of data],
    ],
    month2: [
      day1: [array of data],
      day2: [array of data],
      day3: [array of data],
    ]
  ]
]