PHP Taskbook Level 6.7

Output the dates of all weekends of the current year as a list ul.

When you enter the page, display the name of the day of the week of the last day of the current month in the paragraph.

When you enter the page, fill in the selection with numbers from the first to the last day of the current month.

A form with an input is given. A number is entered into the input. After sending the form, output a line consisting of zeros in a paragraph, the number of which is equal to the number. For example, when entering the number 5, we should get the line '00000'.