Easiest way to alternate row colors in PHP/HTML?

Question

Here\'s a PHP example of mine. Can anyone find a shorter/easier way to do this?

Answer 1

Smarty has it inbuilt:

{section name=rows loop=$data}

   {$data[rows]}

{/section}

So does Django:

{% for o in some_list %}
    
        ...
    
{% endfor %}