regex- regular expression help

I am using curl to open google search page

$filelocation="http://www.google.com/search?q=cellphone&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $filelocation);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$html=curl_exec ($ch);
curl_close ($ch);

Code (markup):

Now I want all the sponsored results to get in php variable from $html, like
$title[0]="Cell phone" //ad title
$adurl[0]="http://www.unfoundation.org/vodafone/index.asp"
// ad url is appended after href=/url?sa or href=/pagead/iclk?sa
$addescription[0]="Improving telecommunications to help in times of disaster."
$displayurl[0]="www.UNFoundation.org/vodafone"

I am not able to parse ad data from html code ( because I can't write regex-regular expression for that)
I need some kind of help in writing regex to parse ad data from html code.

I can pay for it.

P.S. - Google sponsored results are at top or right of natural results.

 

<a id=an5 href=/pagead/iclk?sa=l&ai=Bjt-Pnum=8&adurl=http://www.westhost.com/package-compare.html%3FDgoo-gene>
$3.95 <b>Web Hosting</b></a></font><br>VPS, Huge Disk Space and Bandwidth!<br>
Fall Special ends soon...<br><span class=a>www.westhost.com</span>

<a id=pa3 href=/url?sa=L&ai=B0MF0&q=http://www.3ix.com/%3Fso onmouseover="return true">
2GB <b>Web Hosting</b> $1/Rs.40</a><br>
<font size=-1><span class=a>www.3ix.in</span>

Code (markup):

I have only above two type of code in my document.
and I want to extract following data from it.

Example:
exact url: http://www.westhost.com/package-compare.html
Title: $3.95 Web Hosting
Description : VPS, Huge Disk Space and Bandwidth! Fall Special ends soon...
Domain: www.westhost.com

I can make some kinda logic but cant make exact regular expression
<a id=(an|pa)[0-9] href=/[^&q|&adurl] (&q|&adurl)=$exacturl%[^ ]> $title </a> <span>$Domain </span>$description </font>


I need regular expression to parse this data from my html code.
with regular expression I can use preg_match_all to get the data.

P.S. - For any reference one can refer http://www.google.com/search?hl=en&q=webhosting&btnG=Google+Search
From here i got the HTML code. Exact url is ended at % sign.

Thanks for any kind of help.

 

Place (.*) where you want to catch the text and escape all modifiers.

Peace,