PHP filter_var_array() Function

filter_var_array(array, args)

This parameter can also be a single filter ID, if so, all values in the input array are filtered by the specified filter

A filter ID can be an ID name (like FILTER_VALIDATE_EMAIL) or an ID number (like 274)

<?php
$arr = array
 (
 "name" => "peter griffin",
 "age" => "41",
 "email" => "peter@example.com",
 );

$filters = array
 (
 "name" => array
  (
  "filter"=>FILTER_CALLBACK,
  "flags"=>FILTER_FORCE_ARRAY,
  "options"=>"ucwords"
  ),
 "age" => array
  (
  "filter"=>FILTER_VALIDATE_INT,
  "options"=>array
   (
   "min_range"=>1,
   "max_range"=>120
   )
  ),
 "email"=> FILTER_VALIDATE_EMAIL,
 );

print_r(filter_var_array($arr, $filters));
?>

Array
 (
 [name] => Peter Griffin
 [age] => 41
 [email] => peter@example.com
 )