Thank you for a super fast reply, and kind assistance!

The only post field name and value corresponds to the product section id. I fond no page reference at all, even when looking at cookies. But this is not my normal field of expertise… Under Posting Data I see:

__Eventtarget | _ctl0$_ctl0$MainContent$MainContent$btnNext

as well as __VIEWSTATE and __EVENTVALIDATION with long md5 type encoded textstrings.
Plus a bunch of other variables relating to the product items shown.

Maybe I could kindly ask you for a quick glance at http://www.4sound.se/section.aspx?id=1025001

It is the “[Nästa Sida >]” a tag on the top of the page I want to trigger. Kindly let me know if I this is way out of my league or if it should be rather easy to accomplish.

Thank you again for your most appreciated help!

the post_data does not appear to be correct.
first make the post request directly from your browser on the target website, and use Dom Inspector > Network tab to find out the correct post field name and post field value. Also note the post target url.

Then use the url and post data to construct the curl post query in php.

you would normally click on, with the corresponding script:

function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}

Setting line 17 of the “POST request” example to
$post_data = ‘theForm.__EVENTTARGET.value=_ctl0$_ctl0$MainContent$MainContent$btnNext’;
or
$post_data = ‘theForm.__EVENTTARGET.value=_ctl0$_ctl0$MainContent$MainContent$btnNext&theForm.__EVENTARGUMENT.value=””‘;

only produces a blank screen.

there was an error.
please check now.

I do not see a section that says using cookies. In fact the article for me cuts off after the post section.

“The important options to set in a POST request are POST=true and POSTFIELDS=post_data. The first option tells curl that we want to make a P” <– Cuts off here regardless of what browser I view the article in.