PHP strip_tag and htmlspecialchars not working for multiple input

Question

I'm trying to remove html tags from multiple user input. I tried it individually it worked, but when i turned it into a function it's not removing the html tags...

$test = array('name' => '<script>alert("HELLO..");</script>',
                'phone' => '23497999000000'
                );

    (clean($test));
function clean($field)
    {
        foreach ($field as $key => $value) {
            $value = htmlspecialchars(strip_tags($value));
        }
        return $field;
    }

Answer 1

You're set the value of $value, but lose it, when it comes out of scope. I think it'll be correct:

function clean($field)
    {
        foreach ($field as $key => $value) {
            $field[$key] = htmlspecialchars(strip_tags($value));
        }
        return $field;
    }