Please ask the specific usage of php filter_input_array ()?

<?php
$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_input_array(INPUT_POST, $filters));
?>

:
Array
(
[name] => Peter
[age] => 41
[email] => peter@example.com
)
What is the use of "flags" = > FILTER_FORCE_ARRAY, in the

name array, and is there any other use in options?

Php
Jul.09,2021
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