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

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<?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";
?>


Output:

Heights of the top three buildings:
45
25
24

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