<?php

function sanitize( $input, $strip = 1, $charset = 'UTF-8' )
{
    if ( is_array($input) ) {
        $output = array();
        foreach ( $input as $key => $data ) {
            $output[$key] = sanitize($data, $strip, $charset);
        }
        return $output;
    }
    else {
        // Strip HTML tags if set
        if ($strip > 0)
            $input = strip_tags($input);

        // Encode special chars
        $input = htmlspecialchars($input, ENT_QUOTES, $charset);

        if ( get_magic_quotes_gpc() )
            return mysql_real_escape_string(stripslashes($input));
        else
            return mysql_real_escape_string($input);
    }
}