How to get a particular data from from the scrapped webpage in php
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3577641/how-to-parse-and-process-html-with-php">How to parse and process HTML with PHP?</a>  </p>
</blockquote>



<p>Hi there I have scraped a web page </p>

<pre><code>  &lt;div class="col blue"&gt;
        &lt;img  src="/en/media/Dentalscreenresized.jpg" /&gt;
        &lt;h4&gt;This is line i want to scrap&lt;/h4&gt;
        &lt;p class="date"&gt;12 Sep
            &lt;span class="year"&gt;2012&lt;/span&gt;&lt;/p&gt;
        &lt;p&gt;13 people were diagnosed with oral cancer after last year&amp;rsquo;s Mouth Cancer Awareness Day. Ring 021-4901169 to arrange for a free screening on the 19th September.&lt;/p&gt;
        &lt;p class="readmore"&gt;&lt;a href="/en/news/abcd.html"&gt;Read More&lt;/a&gt;&lt;/p&gt;
        &lt;p class="rightreadmore"&gt;&lt;a href="http://www.xyz.ie/en/news/"&gt;See all News&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/a&gt;&lt;/p&gt;
    &lt;/div&gt;
</code></pre>

<p>Now i want to display the <code>&lt;h4&gt;</code> tag of <code>class="col blue"</code>.I seen online to use <code>preg_match_all()</code> I am not familiar with regular expression... any help please</p>
