PHP -Sanitize values of a array

Question

I have a array, which comes from $_POST[] and can have other arrays in it as values, like:

array(
 'title' => 'Title',
 'data' => array(
             'hdr' => 'Header'
             'bdy' => 'Body'
           ),
  'foo' => array(1, 23, 65),
  ...
)

How can I sanitize all values of this big array? for eg. apply a strip_tags() to values like Title, Header, Body, 1, 23, 65 etc ?

Answer 1

Just use the filter extension.

/* prevent XSS. */
$_GET   = filter_input_array(INPUT_GET, FILTER_SANITIZE_STRING);
$_POST  = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);

This will sanitize your $_GET and $_POST.