What's the standard way to generate a url like stuff?

$arr = array('key1'=>'val1','key2'=>'val2');
$str = '';
foreach($arr as $k=>$v)
{
    $str .= '&' . $k . '=' . urlencode($v);
}
echo substr($str,1);

Or

$arr = array('key1'=>'val1','key2'=>'val2');
$str = '';
foreach($arr as $k=>$v)开发者_JAVA技巧
{
    $str .= '&' . urlencode($k) . '=' . urlencode($v);
}
echo substr($str,1);

Does the $k need to be urlencoded?

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Yes; If you use PHP5 i Guess the http_build_query would be just what you need ;)

http://nl2.php.net/manual/en/function.http-build-query.php