Demonstrandum

<?php
  header("Content-type: text/plain");

  if ( $_POST['payload'] ) {
    shell_exec("./pull");
  }
?>

Demonstrandum

fizzbuzz = (
    lambda n: 'fizzbuzz' if n % 15 == 0 else ('fizz' if n % 3 == 0 else ('buzz' if n % 5 == 0 else str(n) ))
)

# Interactivity
if __name__ == '__main__':
    import sys
    if len(sys.argv) == 1:
        print('Give command line arguments of number to fizzbuzz.')
        exit(1)