Trying to pull a value from a website element

Question

I am very new to PHP, its not my domain however right now I have a need to pull a certain value from a website, I looked up on the internet and found the following function which I implemented as per my need:

          <?php
          $curl_handle=curl_init();
          curl_setopt($curl_handle,CURLOPT_URL,'http://www.indiagoldrate.com/gold-rate-in-mumbai-today.htm');
          curl_setopt($curl_handle,CURLOPT_CONNECTTIMEOUT,2);
          curl_setopt($curl_handle,CURLOPT_RETURNTRANSFER,1);
          $buffer = curl_exec($curl_handle);
          curl_close($curl_handle);
          if (empty($buffer))
          {
              print "Sorry, example.com are a bunch of poopy-heads.<p>";
          }
          else
          {
              print $buffer;
          }
          ?>

As of now I am able to retrieve the whole page, but I am only interested in one value from the said page, I need ideas of how to do it?

Code of the webpage I need: (Simple View source)

      <tr>
<td>MUMBAI<BR>Thu, Jul 25th, 2013</td>
<td><TABLE class="innerTable">
<TR>
    <TD>1g </TD>
    <TD>Rs. 2,595</TD>
</TR>
<TR>
    <TD>8g</TD>
    <TD>Rs. 20,760</TD>
</TR>
<TR>
    <TD>10g</TD>
    <TD>Rs. 25,950</TD>
</TR>
<TR>
    <TD>100g</TD>
    <TD>Rs. 2,59,500</TD>
</TR>
<TR>
    <TD>1 KG</TD>
    <TD>Rs. 25,95,000</TD>
</TR>
</TABLE></td>
<td><TABLE class="innerTable">
<TR>
    <TD>1g </TD>
    <TD>Rs. 2,795</TD>
</TR>
<TR>
    <TD>8g</TD>
    <TD>Rs. 22,360</TD>
</TR>
<TR>
    <TD>10g</TD>
    <TD>Rs. 27,950</TD>
</TR>
<TR>
    <TD>100g</TD>
    <TD>Rs. 2,79,500</TD>
</TR>
<TR>
    <TD>1 KG</TD>
    <TD>Rs. 27,95,000</TD>
</TR>
</TABLE></td>

I am interested in this part:

1g Rs. 2,595

Answer 1

get simple_dom_html.php file and include it.

$html = str_get_html($buffer);
$html->find('any class etc');