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PHP Exercises: Compute the digit number of sum of two given integers

PHP: Exercise-47 with Solution

Write a PHP program to compute the digit number of sum of two given integers.

Input:
Each test case consists of two non-negative integers x and y which are separated by a space in a line.
0 ≤ x, y ≤ 1,000,000

Pictorial Presentation:

PHP: Compute the digit number of sum of two given integers

Sample Solution: -

PHP Code:

<?php
 while(true) {
    $inputs = explode(' ', trim(fgets(STDIN))); 
    if (!is_array($inputs) || count($inputs) < 2) {
        exit;
    } 
    $a = $inputs[0];
    $b = $inputs[1]; 
    $d = numDigits($a + $b);
    echo("Digit number of sum of two given integers: ");
    echo $d . "\n";
} 
function numDigits($n) {
    return (int)(log10($n) + 1);
}
?>

Sample Output: 

Digit number of sum of two given integers: 2

Flowchart:

Flowchart: Compute the digit number of sum of two given integers

PHP Code Editor:

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Previous: Write a PHP program to find heights of the top three building in descending order from eight given buildings.
Next: Write a PHP program to check whether three given lengths (integers) of three sides form a right triangle. Print "Yes" if the given sides form a right triangle otherwise print "No".

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PHP: Tips of the Day

Mutates the original array to filter out the values specified

Example:

<?php
function tips_pull(&$items, ...$params)
{
  $items = array_values(array_diff($items, $params));
  return $items;
}

$items = ['x', 'y', 'z', 'x', 'y', 'z'];
print_r(tips_pull($items, 'y', 'z'));
?>

Output:

Array
(
    [0] => x
    [1] => x
)