is @unlink a bad practice?
<p>I'm usually against using <code>@</code> as it can cause lots of headaches. But look at this two examples:</p>

<pre><code>a)

if(file_exists('file'))
    unlink('file');
</code></pre>

<p>.</p>

<pre><code>b)

@unlink('file');
</code></pre>

<p>.</p>

<p>It sounds like <code>b</code> is causing less disk lookups, which is good for performance. So my question is: <strong>would option <code>b</code> cause me any problem or has any disavantages in relation to <code>a</code>?</strong></p>
