Using the number validation you can check if the user entered an integer or a real number as required. The value can be range checked using the minimum and/or the maximum setting.

Some integer number Some floating point number Some number >= 5

click here to see how easy it is to create it!

Below are the dumps of some PHP variables - submit the form to see the changes!

Contents of the $_POST array:
$_POST = array (
)
      

Results of a $clonefish->getElementValues() call:
array (
  'number' => NULL,
  'real' => NULL,
  'intmin5' => NULL,
  'id' => 'validnumber',
)