php date() numerical description of day
<p>Which is safer/better to use in php to get the numerical number of a day:</p>

<pre><code>date('w'); // Numeric representation of the day of the week
</code></pre>

<p>or </p>

<pre><code>date('N'); // From php manual: ISO-8601 numeric representation of the day of the week (added in PHP 5.1.0)
</code></pre>

<p>I like the second version as it feels more natural but i'm wondering if there are any implications beyond that of using either method?</p>
