Question

Create a function that prints the sign (negative, positive or zero) of an integer number n:

• 2 -> The number 2 is positive.
• -5 -> The number -5 is negative.
• 0 -> The number 0 is zero.

Answer 1

Here is my answer:

<?php

$integer = intval(readline());

function checkSign($integer) {
    if ($integer < 0) {
        echo "The number $integer is negative.";
    } elseif ($integer > 0) {
        echo "The number $integer is positive.";
    } else {
        echo "The number $integer is zero.";
    }
}

checkSign($integer);