PHP Taskbook Level 3.8

Задание 1

Given an array of numbers, check that all numbers in this array contain the digit 3.

Задание 2

Given a string in the format:

php'kebab-case'

Convert it to the format:

php'snake_case'

Задание 3

Given a string in the format:

php'snake_case'

Convert it to the format:

php'camelCase'

Задание 4

Given a string in the format:

php'camelCase'

Convert it to the format:

php'snake_case'

Задание 5

Create the following array using loops:

php[
  [1, 2, 3],
  [1, 2, 3],
  [1, 2, 3],
  [1, 2, 3],
  [1, 2, 3],
]