mogetutu/get.php

## get.php
<!-- GET -->
<?php
$firstname    = $_GET['firstname'];
$lastname     = $_GET['lastname'];
$subjectone   = $_GET['subjectone'];
$subjecttwo   = $_GET['subjecttwo'];
$subjectthree = $_GET['subjectthree'];
$subjectfour  = $_GET['subjectfour'];
$subjectfive  = $_GET['subjectfive'];

$totalmarks = $subjectone + $subjecttwo + $subjectthree + $subjectfour + $subjectfive;
$totalmarkspercentage = $totalmarks * 100 / 500;

?>
<html>
  <head>
    <title>GET</title>
  </head>
  <body>
    <form action="" method="GET">
      <input type="text" name="firstname" placeholder="First Name">
      <input type="text" name="lastname" placeholder="Last Name">
      <p><input type="text" name="subjectone" placeholder="Subject One"></p>
      <p><input type="text" name="subjecttwo" placeholder="Subject Two"></p>
      <p><input type="text" name="subjectthree" placeholder="Subject Three"></p>
      <p><input type="text" name="subjectfour" placeholder="Subject Four"></p>
      <p><input type="text" name="subjectfive" placeholder="Subject Five"></p>
      <p>
        Total Marks: <?php if(isset($totalmarks)) echo $totalmarks; ?>
      </p>
      <p>
        Total Marks(%): <?php if(isset($totalmarkspercentage)) echo $totalmarkspercentage . "%"; ?>
      </p>
      <input type="submit">
    </form>
  </body>
</html>

## post.php
<!-- POST -->
<?php
// shorthand if else
// $a = (isset($a)) ? $a : '';
// if(isset($a))
// {
//    $a = $a;
// }
// else
// {
//  $a = '';
// }

$firstname    = (isset($_POST['firstname'])) ? $_POST['firstname'] : '';
$lastname     = (isset($_POST['lastname'])) ? $_POST['lastname'] : '' ;
$subjectone   = (isset($_POST['subjectone'])) ? $_POST['subjectone'] : '' ;
$subjecttwo   = (isset($_POST['subjecttwo'])) ? $_POST['subjecttwo'] : '' ;
$subjectthree = (isset($_POST['subjectthree'])) ? $_POST['subjectthree'] : '' ;
$subjectfour  = (isset($_POST['subjectfour'])) ? $_POST['subjectfour']: '' ;
$subjectfive  = (isset($_POST['subjectfive'])) ? $_POST['subjectfive'] : '';

// Array of users marks
$marks = array($subjectone, $subjecttwo, $subjectthree, $subjectfour, $subjectfive);

// Calculate total marks
// how to get total value of items in an array
$totalmarks = array_sum(check_marks($marks));

// Get total number of items in an array
$totalitems = count($marks);

$totalmarkspercentage = percentage($totalmarks, $totalitems);

// percentage function
function percentage($totalmarks, $totalitems)
{
  return ($totalmarks * 100) / (100* $totalitems);
}

// Function that check if the marks are more than 100 set marks to 100
function check_marks($marks)
{
  foreach ($marks as $mark)
  {
    if($mark > 100)
    {
      $mark = 100;
    }

    $newmarks[] = $mark;
  }

  return $newmarks;
}

?>
<html>
  <head>
    <title>POST</title>
  </head>
  <body>
    <form action="" method="POST">
      <input type="text" name="firstname" value="<?php echo $firstname; ?>" placeholder="First Name">
      <input type="text" name="lastname" value="<?php echo $lastname; ?>" placeholder="Last Name">
      <p><input type="text" name="subjectone" value="<?php echo $subjectone; ?>" placeholder="Subject One"></p>
      <p><input type="text" name="subjecttwo" value="<?php echo $subjecttwo; ?>" placeholder="Subject Two"></p>
      <p><input type="text" name="subjectthree" value="<?php echo $subjectthree; ?>" placeholder="Subject Three"></p>
      <p><input type="text" name="subjectfour" value="<?php echo $subjectfour; ?>" placeholder="Subject Four"></p>
      <p><input type="text" name="subjectfive" value="<?php echo $subjectfive; ?>" placeholder="Subject Five"></p>
      <p>
        Total Marks: <?php if(isset($totalmarks)) echo $totalmarks; ?>
      </p>
      <p>
        Total Marks(%): <?php if(isset($totalmarkspercentage)) echo $totalmarkspercentage . "%"; ?>
      </p>
      <input type="submit">
    </form>
  </body>
</html>
	<!-- GET -->
	<?php
	$firstname = $_GET['firstname'];
	$lastname = $_GET['lastname'];
	$subjectone = $_GET['subjectone'];
	$subjecttwo = $_GET['subjecttwo'];
	$subjectthree = $_GET['subjectthree'];
	$subjectfour = $_GET['subjectfour'];
	$subjectfive = $_GET['subjectfive'];

	$totalmarks = $subjectone + $subjecttwo + $subjectthree + $subjectfour + $subjectfive;
	$totalmarkspercentage = $totalmarks * 100 / 500;

	?>
	<html>
	<head>
	<title>GET</title>
	</head>
	<body>
	<form action="" method="GET">
	<input type="text" name="firstname" placeholder="First Name">
	<input type="text" name="lastname" placeholder="Last Name">
	<p><input type="text" name="subjectone" placeholder="Subject One"></p>
	<p><input type="text" name="subjecttwo" placeholder="Subject Two"></p>
	<p><input type="text" name="subjectthree" placeholder="Subject Three"></p>
	<p><input type="text" name="subjectfour" placeholder="Subject Four"></p>
	<p><input type="text" name="subjectfive" placeholder="Subject Five"></p>
	<p>
	Total Marks: <?php if(isset($totalmarks)) echo $totalmarks; ?>
	</p>
	<p>
	Total Marks(%): <?php if(isset($totalmarkspercentage)) echo $totalmarkspercentage . "%"; ?>
	</p>
	<input type="submit">
	</form>
	</body>
	</html>
	<!-- POST -->
	<?php
	// shorthand if else
	// $a = (isset($a)) ? $a : '';
	// if(isset($a))
	// {
	// $a = $a;
	// }
	// else
	// {
	// $a = '';
	// }

	$firstname = (isset($_POST['firstname'])) ? $_POST['firstname'] : '';
	$lastname = (isset($_POST['lastname'])) ? $_POST['lastname'] : '' ;
	$subjectone = (isset($_POST['subjectone'])) ? $_POST['subjectone'] : '' ;
	$subjecttwo = (isset($_POST['subjecttwo'])) ? $_POST['subjecttwo'] : '' ;
	$subjectthree = (isset($_POST['subjectthree'])) ? $_POST['subjectthree'] : '' ;
	$subjectfour = (isset($_POST['subjectfour'])) ? $_POST['subjectfour']: '' ;
	$subjectfive = (isset($_POST['subjectfive'])) ? $_POST['subjectfive'] : '';

	// Array of users marks
	$marks = array($subjectone, $subjecttwo, $subjectthree, $subjectfour, $subjectfive);

	// Calculate total marks
	// how to get total value of items in an array
	$totalmarks = array_sum(check_marks($marks));

	// Get total number of items in an array
	$totalitems = count($marks);

	$totalmarkspercentage = percentage($totalmarks, $totalitems);

	// percentage function
	function percentage($totalmarks, $totalitems)
	{
	return ($totalmarks * 100) / (100* $totalitems);
	}

	// Function that check if the marks are more than 100 set marks to 100
	function check_marks($marks)
	{
	foreach ($marks as $mark)
	{
	if($mark > 100)
	{
	$mark = 100;
	}

	$newmarks[] = $mark;
	}

	return $newmarks;
	}

	?>
	<html>
	<head>
	<title>POST</title>
	</head>
	<body>
	<form action="" method="POST">
	<input type="text" name="firstname" value="<?php echo $firstname; ?>" placeholder="First Name">
	<input type="text" name="lastname" value="<?php echo $lastname; ?>" placeholder="Last Name">
	<p><input type="text" name="subjectone" value="<?php echo $subjectone; ?>" placeholder="Subject One"></p>
	<p><input type="text" name="subjecttwo" value="<?php echo $subjecttwo; ?>" placeholder="Subject Two"></p>
	<p><input type="text" name="subjectthree" value="<?php echo $subjectthree; ?>" placeholder="Subject Three"></p>
	<p><input type="text" name="subjectfour" value="<?php echo $subjectfour; ?>" placeholder="Subject Four"></p>
	<p><input type="text" name="subjectfive" value="<?php echo $subjectfive; ?>" placeholder="Subject Five"></p>
	<p>
	Total Marks: <?php if(isset($totalmarks)) echo $totalmarks; ?>
	</p>
	<p>
	Total Marks(%): <?php if(isset($totalmarkspercentage)) echo $totalmarkspercentage . "%"; ?>
	</p>
	<input type="submit">
	</form>
	</body>
	</html>