getLink("http://www.google.com/search",array(
		"q"=>"binny",
		"hello"=>"world",
		"results"=>10)
	);

getLink("http://www.example.com/edit.php",array(
		"item_id"	=> 15,
		"return_url"=> 'index.php'
	),
true);

/**
 * Create a link by joining the given URL and the parameters given as the second argument.
 * Arguments :  $url - The base url.
 *                $params - An array containing all the parameters and their values.
 *                $use_existing_arguments - Use the parameters that are present in the current page
 * Return : The new url.
 * Example : 
 *            getLink("http://www.google.com/search",array("q"=>"binny","hello"=>"world","results"=>10));
 *                    will return
 *            http://www.google.com/search?q=binny&hello=world&results=10
 */
function getLink($url,$params=array(),$use_existing_arguments=false) {
    if($use_existing_arguments) $params = $params + $_GET;
    if(!$params) return $url;
    $link = $url;
    if(strpos($link,'?') === false) $link .= '?'; //If there is no '?' add one at the end
    elseif(!preg_match('/(\?|\&(amp;)?)$/',$link)) $link .= '&'; //If there is no '&' at the END, add one.
    
    $params_arr = array();
    foreach($params as $key=>$value) {
        if(gettype($value) == 'array') { //Handle array data properly
            foreach($value as $val) {
                $params_arr[] = $key . '[]=' . urlencode($val);
            }
        } else {
            $params_arr[] = $key . '=' . urlencode($value);
        }
    }
    $link .= implode('&',$params_arr);
    
    return $link;
}