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PHP Exercises: Accept two integers and return true if either one is 5 or their sum or difference is 5

PHP Basic Algorithm: Exercise-40 with Solution

Write a PHP program that accept two integers and return true if either one is 5 or their sum or difference is 5.

Sample Solution:

PHP Code :

<?php
function test($x, $y)
{
   return $x == 5 || $y == 5 || $x + $y == 5 || abs($x - $y) == 5;
 }

var_dump(test(5, 4));
var_dump(test(4, 3));
var_dump(test(1, 4));

Sample Output:

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

Pictorial Presentation:

PHP Basic Algorithm Exercises: Accept two integers and return true if either one is 5 or their sum or difference is 5.

Flowchart:

Flowchart: Accept two integers and return true if either one is 5 or their sum or difference is 5.

PHP Code Editor:

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Previous: 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.
Next: Write a PHP program to test if a given non-negative number is a multiple of 13 or it is one more than a multiple of 13.

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