php; remove single variable value pair from querystring

Question

I have a page that lists out items according to numerous parameters ie variables with values.

listitems.php?color=green&size=small&cat=pants&pa         


        

Answer 1

Another solution, to avoid & problems too!!!

remove_query('http://example.com/?a=valueWith**&**inside&b=value');

Code:

function remove_query($url, $which_argument=false){ 
    return preg_replace('/'. ($which_argument ? '(\&|)'.$which_argument.'(\=(.*?)((?=&(?!amp\;))|$)|(.*?)\b)' : '(\?.*)').'/i' , '', $url);  
}