PHP Exercises: Compute the sum of the two given integers

Last update on May 30 2022 11:41:42 (UTC/GMT +8 hours)

PHP Basic Algorithm: Exercise-39 with Solution

Write a PHP program to compute the sum of the two given integers. If the sum is in the range 10..20 inclusive return 30.

Sample Solution:

PHP Code :

<?php
function test($a, $b)
{
    return $a + $b >= 10 && $a +$b <= 20 ? 30 : $a + $b;
 }

echo test(12, 17)."\n";
echo test(2, 17)."\n";
echo test(22, 17)."\n";
echo test(20, 0)."\n";

Sample Output:

Pictorial Presentation:

PHP Basic Algorithm Exercises: Compute the sum of the two given integers.

Flowchart:

PHP Code Editor:

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Previous: Write a PHP program to check if a triple is presents in an array of integers or not. If a value appears three times in a row in an array it is called a triple.
Next: Write a PHP program that accept two integers and return true if either one is 5 or their sum or difference is 5.

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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