PHP Taskbook Level 7.2
Given a text file, get the number of letters in it (i.e. without spaces, punctuation marks, etc.).
Create a text file named with the current date in the format year-month-day.
The file contains numbers separated by commas. Get the maximum of these numbers.
Given a text file, get an array of all its lines.
A form with an input is given. A year is entered into it. After submitting the form, output the dates of all Fridays 13-th of the given year as a list ul.
Write a program that will generate the following array:
[
['x'],
['x', 'x'],
['x', 'x', 'x'],
['x', 'x', 'x', 'x'],
['x', 'x', 'x', 'x', 'x'],
]
