PHP Taskbook Level 3.5

Задание 1

Given a text with words. Write into an array all words that begin with the letter 'a'.

Задание 2

Given an array of numbers, leave in it only those numbers that are divisible by 5.

Задание 3

Given an array of numbers, leave in it only those numbers that contain the digit zero.

Задание 4

Given an array of numbers, check that it contains a number that contains the digit 3.

Задание 5

Given a number:

php35142

Sort the digits of this number. In our case, we should get the following:

php12345

Задание 6

Write a program that will generate the following string:

php'-1-2-3-4-5-'