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PHP Exercises: Find heights of the top three building in descending order from eight given buildings

PHP: Exercise-46 with Solution

Write a PHP program to find heights of the top three building in descending order from eight given buildings.

Input:
0 ≤ height of building (integer) ≤ 10,000

Pictorial Presentation:

PHP: Find heights of the top three building in descending order from eight given buildings

Sample Solution: -

PHP Code:

<?php
  $heights = array();
  while($line = fgets(STDIN)) {
    rtrim($line, "\n");
    array_push($heights, (int)$line);
  }
  rsort($heights);
  print("Heights of the top three buildings:\n");
  echo $heights[0]."\n";
  echo $heights[1]."\n";
  echo $heights[2]."\n";
?>

Sample Output: 

Heights of the top three buildings:
45
25
24

Flowchart:

Flowchart: Find heights of the top three building in descending order from eight given buildings

PHP Code Editor:

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Previous: Write a PHP program to compute the sum of the digits of a number.
Next: Write a PHP program to compute the digit number of sum of two given integers.

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PHP: Tips of the Day

Returns all elements in an array except for the first one

Example:

<?php
function tips_tail($items)
{
  return count($items) > 1 ? array_slice($items, 1) : $items;
}

print_r(tips_tail([1, 5, 7]));
?>

Output:

Array
(
    [0] => 5
    [1] => 7
)