image quality is missing while using thumb.php
<p>I am using thumb.php to restrict image sizes.</p>

<pre><code>&lt;img src="thumb.php?src=&lt;?php echo $imgurl; ?&gt;&amp;h=150&amp;w=180&amp;z=0" alt="&lt;?php the_title(); ?&gt;" width="180" height="150" /&gt;
</code></pre>

<p>The problem is image quality. If i do not use thumb.php and mention the width and height attribute directly in the image tag, the quality is good but while using thumb.php the image looks a little blur.</p>

<p>How to overcome this?</p>
