PHP Exercises: Compute the sum of the two given integer values

PHP Basic Algorithm: Exercise-1 with Solution

Write a PHP program to compute the sum of the two given integer values. If the two values are the same, then returns triple their sum.

Sample Solution:

PHP Code :

<?php
// Define a function named "test" that takes two parameters, $x and $y
function test($x, $y) 
{
    // Use the ternary operator to check if $x is equal to $y
    // If true, return the result of multiplying the sum of $x and $y by 3
    // If false, return the sum of $x and $y
    return $x == $y ? ($x + $y)*3 : $x + $y;
}

// Call the test function with arguments 1 and 2, and echo the result
echo test(1, 2) . "\n";

// Call the test function with arguments 3 and 2, and echo the result
echo test(3, 2) . "\n";

// Call the test function with arguments 2 and 2, and echo the result
echo test(2, 2) . "\n";
?> 

Explanation:

• Function Definition:
• A function named test is defined with two parameters: $x and $y.
• Ternary Operation:
• Inside the function, a ternary operator checks if $x is equal to $y.
• If $x == $y, it returns ( $x + $y ) * 3, which is three times the sum of $x and $y.
• If $x is not equal to $y, it returns $x + $y, simply the sum of $x and $y.
• Function Calls and Output:
• First Call: echo test(1, 2);
• Since 1 is not equal to 2, it outputs 1 + 2 = 3.
• Second Call: echo test(3, 2);
• Since 3 is not equal to 2, it outputs 3 + 2 = 5.
• Third Call: echo test(2, 2);
• Since 2 is equal to 2, it outputs (2 + 2) * 3 = 12.

Output:

3
5
12

Visual Presentation:

Flowchart:

PHP Code Editor:

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