Please help with with Regex Pattern

[cyberhostbd]

I'm trying to match following url but couldn't come up with right pattern.

PHP Code:

www.blahblahblah.com/show/index.php?product=item1 


I just want to match this part only from the html

PHP Code:

www.blahblahblah.com/show/index.php?product= 


I tried following but didn't work-
$pattern = /www.blahblahblah.com\/show\/index.php\?product=/

but didn't work. Plz co-operate.

[bjarneo]

Actually you don't need to use regex if you only want to match those urls.
Try strstr()

Example:

PHP Code:

$url = "www.blahblahblah.com/show/index.php?product=item1";

$pattern = "www.blahblahblah.com/show/index.php?product=";  

$result = strstr($url, $pattern);
if($result == true) {
    echo 'true';
} else {
    echo 'false';
} 


Output: true