Question

This is the part of the code for paging(when you see page 1,page 2…at the bottom).The $_SERVER[QUERY_STRING] is used to copy what was searched on previous page so that page number 2 displays results for same query.

The problem is that on page 2 the “query string” is added with page number &page=2 so when you click for page 3 the $_SERVER[QUERY_STRING] copies the query(which i need to be copied,eg. ?search=salad)and the page number(which is unnecessary),it looks like this &page=2&page=3

Is there any good way to do this?…it would be nice if something could change only the number of page instead copying whole word.

<a href='$_SERVER[PHP_SELF]?$_SERVER[QUERY_STRING]?start=$back'><font face='Verdana' size='2'>PREV</font></a>

Answer 1

$query = http_build_query(array('page' => $num) + $_GET);
printf('<a href="%s?%s">Prev</a>', $_SERVER['PHP_SELF'], $query);

This uses the $_GET array, which contains all the values of $_SERVER['QUERY_STRING'] in a neat array, “overwrites” the page value of that array, then re-assembles it into a URL-encoded query string.