[WordPress] add_filter() in a loop - version 3

add_filter('the_content', 'callback_func');

function callback_func($content) {
    $map = array(
        1 => array(
            'foo' => 'black',
            'bar' => 'white'
        ),
        2 => array(
            'foo' => 'red',
            'bar' => 'blue'
        )
    );

    for ($i = 1; $i <= 2; $i++) {
        $content = str_ireplace($map[$i]['foo'], $map[$i]['bar'], $content);
    }

    return $content;
}