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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
function test($x, $y) 
{
    return ($x == 30) || ($y == 30) || ($x + $y == 30);
}

var_dump(test(30, 0));
var_dump( test(25, 5));
var_dump( test(20, 30));
var_dump(test(20, 25));

Sample Output:

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

Pictorial Presentation:

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

Flowchart:

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

PHP Code Editor:

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Previous: 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.
Next: Write a PHP program to check a given integer and return true if it is within 10 of 100 or 200.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC