PHP - Increment a value
<p>I'd like to increment a value in a 3-digits format.</p>

<p>For example:</p>

<pre><code>$start_value = 000;
while () {
do something;
$start_value++;
}
</code></pre>

<p>In this way I have this result:</p>

<pre><code>$start_value = 000;
$start_value = 1;
$start_value = 2;
$start_value = 3; 
</code></pre>

<p>and so on</p>

<p>instead of <code>'001', '002', '003'</code></p>

<p>How I can accomplish this result?</p>
