php form data as array

<?php
if(isset($_REQUEST['save']))
{
//get the form value and store in $array
	$array=$_REQUEST['arr'];
//get the $array index and value store them in $key and $value
	foreach($array as $key=>$value)
	{
//display the index of associative array and value
	 echo $key." : ".ucfirst($value)."<br/>";
	}

}
?>

  <form method="post">
  <tr>
    <td width="159">Name</td>
    <td width="108"><input type="text" name="arr[Name]"/></td>
  </tr>
  <tr>
    <td>Email</td>
    <td><input type="email" name="arr[Email]"/></td>
  </tr>
  <tr>
    <td>Mobile</td>
    <td><input type="number" name="arr[Mobile]"/></td>
  </tr>
  <tr>
    <td>Address</td>
    <td><textarea name="arr[Address]"></textarea></td>
  </tr>
  <tr>
    <td colspan="2" align="center">
	<input type="submit" value="save" name="save"/>
	</td>
  </tr>
  </form>