PHP Exercises: Compute the sum of three given integers. If the two values are same return the third value

PHP Basic Algorithm: Exercise-54 with Solution

Write a PHP program to compute the sum of three given integers. If the two values are same return the third value.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes three parameters and returns a value based on certain conditions
function test($x, $y, $z)
{
    // Check if all three parameters are equal; if true, return 0
    if ($x == $y && $y == $z) return 0;
    
    // Check if $x is equal to $y; if true, return $z
    if ($x == $y) return $z;
    
    // Check if $x is equal to $z; if true, return $y
    if ($x == $z) return $y;
    
    // Check if $y is equal to $z; if true, return $x
    if ($y == $z) return $x;
    
    // If none of the above conditions are met, return the sum of $x, $y, and $z
    return $x + $y + $z;
}

// Test the 'test' function with different input values and display the results
echo (test(4, 5, 7))."\n";
echo (test(7, 4, 12))."\n";
echo (test(10, 10, 12))."\n";
echo (test(12, 12, 18))."\n";
?>

Explanation:

• Function Definition:
• The test function takes three parameters: $x, $y, and $z. Based on various conditions, it returns a specific value.
• Conditions:
• All Equal: If all three parameters ($x, $y, and $z) are equal, the function returns 0.
• Two Equal (Returning Third):
• If $x and $y are equal, it returns $z.
• If $x and $z are equal, it returns $y.
• If $y and $z are equal, it returns $x.
• None of the Above: If none of the values are equal, it returns the sum of $x, $y, and $z.

Output:

16
23
12
18

Flowchart:

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP program to compute the sum of two given non-negative integers x and y as long as the sum has the same number of digits as x. If the sum has more digits than x then return x without y.
Next: Write a PHP program to compute the sum of the three integers. If one of the values is 13 then do not count it and its right towards the sum.