Write a PHP script to calculate the factorial of a number using a function.

Assignment:4 Practice Set Q.3 Solution

Write a PHP script to calculate the factorial of a number using a function.

          <?php
  //input string
  echo"Enter elements of array (Saperate each element by a ,)";
  $inpstr= readline();
  
  //Convert string into array
  
  $arr= explode(',',$inpstr);
  
  //Finding positive and negative elements
  
  echo" Positive Elements on the left side and Negative elements on the right side";
  foreach($arr as $element)
  {
    if($element > 0)
    {
      echo"\n$element";
    }
    else
    {
      echo"\n\t\t$element";
    }
  }
  
  //Finding Average 
  
  $sum=array_sum($arr);
  
  if($sum > 0)
  {
    $cnt= count($arr);
    $avg= $sum / $cnt;
    echo"\nAverage= $avg";
  }
  else{
    echo"\nAverage cannot be counted";
  }
  
  //Finding sum of elements
  
  
  $sum=array_sum($arr);
  
  echo"\nSum of elements in the array are: $sum";
?>