PHP Exercises: Check two given integers, and return true if one of them is 30 or if their sum is 30

PHP Basic Algorithm: Exercise-3 with Solution

Write a PHP program to check two given integers, and return true if one of them is 30 or if their sum is 30.

Sample Solution:

PHP Code :

<?php
// Define a function named "test" that takes two parameters, $x and $y
function test($x, $y) 
{
    // Use the logical OR operator to check if $x is equal to 30, $y is equal to 30, or the sum of $x and $y is equal to 30
    return ($x == 30) || ($y == 30) || ($x + $y == 30);
}

// Use var_dump to print the result of calling test with arguments 30 and 0
var_dump(test(30, 0));

// Use var_dump to print the result of calling test with arguments 25 and 5
var_dump(test(25, 5));

// Use var_dump to print the result of calling test with arguments 20 and 30
var_dump(test(20, 30));

// Use var_dump to print the result of calling test with arguments 20 and 25
var_dump(test(20, 25));
?> 

Explanation:

• Function Definition:
• The function test is defined with two parameters, $x and $y.
• Logical Check:
• The function checks if:
• $x is equal to 30, or
• $y is equal to 30, or
• The sum of $x and $y is equal to 30.
• It uses the logical OR (||) operator, meaning that if any one of these conditions is true, the function will return true. Otherwise, it returns false.
• Function Calls and Output:
• First Call: var_dump(test(30, 0));
• Since $x is 30, it returns true.
• Second Call: var_dump(test(25, 5));
• The sum of $x and $y is 30 (25 + 5), so it returns true.
• Third Call: var_dump(test(20, 30));
• Since $y is 30, it returns true.
• Fourth Call: var_dump(test(20, 25));
• None of the conditions are met, so it returns false.

Output:

bool(true)
bool(true)
bool(true)
bool(false)

Visual Presentation:

Flowchart:

PHP Code Editor:

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