note 98125 deleted from function.parse-url by danbrown

Note Submitter: ashleyriot at hotmail dot com 

----

Thanks solenoid, I added a modification just in case the url hasn't got any parameters

function modifyURL($mod)
{
    $url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
    $query = explode("&", $_SERVER['QUERY_STRING']);

    //NEW_CODE
    $params = false;
    if ( !empty($query) ){
    	$params = true;
    }
    
    // modify/delete data
    foreach($query as $q) {
        list($key, $value) = explode("=", $q);
        if(array_key_exists($key, $mod)) {
            if($mod[$key]) {
                $url = preg_replace('/'.$key.'='.$value.'/', $key.'='.$mod[$key], $url);
            } else {
                $url = preg_replace('/&?'.$key.'='.$value.'/', '', $url);
            }
        }
    }
    
    // add new data
    $params = "";
    foreach($mod as $key => $value) {
        if($value && !preg_match('/'.$key.'=/', $url)) {
          //NEW_CODE
        	if ( $params ) {
            	$url .= '&'.$key.'='.$value;
        	} else {
        		$url .= '?'.$key.'='.$value;
        		$params = true;
        	}
        }
    }
    
    return $url;
}