Re: [PHPLIB-DEV] Form problem From: Michael Graham (michael <email protected>)
Date: 11/01/99

I use the following functions, which help generalize URLs to some extent,
providing for GET sessions, POST sessions and COOKIE sessions. These need
to be turned into a proper class, which I hope to do eventually.

get_url($url, $param)
get_self_url($param)
get_form_hidden($param)

In a form, use $PHP_SELF for the URL, which provides a clean URL without
any query string.

In each case, $url is a plain URL, either relative or absolute, and $param
is an associative array (in the form of name => value) for any additional
parameters that you would like to pass in the url or in the session.

# selfurls.inc:
# (note that $session_name is a global variable indicating your session
string # (e.g. Poe_Session, or Example_Session).
#
# (note also that for PHPLIB to behave correctly, you do need to copy #
$HTTP_POST_VARS[$session_name] to $HTTP_GET_VARS[$session_name] on each
page # before page_open())

$session_name = 'Example_Session';

function get_params($param='') {
    global $DEBUG_LEVEL, $HTTP_GET_VARS, $session_name;

    $dbg = getenv('PATH_INFO');

    if ($dbg && eregi('debug([0-9]+)', $dbg, $dbgm)) {
        $DEBUG_LEVEL = $dbgm[1];
    }

    if (!$param) $param = array();
    $param[DEBUG_LEVEL] = $DEBUG_LEVEL;

    $session_id = $HTTP_GET_VARS[$session_name];

    if ($session_id) {
        $param[$session_name] = $session_id;
    }

    return $param;
}

function get_self_url($param='') {
    return get_url($GLOBALS[PHP_SELF],$param);
}

function get_url($url,$param='') {

    $pairs = array();
    $qs = '';

    $param = get_params($param);

    reset($param);
    while (list($k,$v) = each($param)) {
        $pairs[] = "$k=$v";
    }

    $qs = join('&', $pairs);

    if ($qs) $url .= "?$qs";

    return $url;
}

function get_form_hidden($param='') {
    $param = get_params($param);

    $sess = '';

    reset($param);
    while (list($k,$v) = each($param)) {
        $sess .= "<input type=hidden name=\"$k\" value=\"$v\">\n";
    }

    return $sess;

}

At 03:32 PM 01/11/99 +0300, Kirill Maximov wrote:
> hi,
>
> I want to offer one more function for class Session which should be
>used in
> the following situation:
> 1. We have a FORM on a page which uses "GET" method.
> 2. We're want to be sure that it will work with session variables even
>if
> user have cookies off.
>
> The solution is simple - pass session_name as additional variable of
>form.
> Why can't we offer a function which will insert appropriate
> <INPUT> hidden field iside the form ?
>
> We use such a function in our work - it seems to be useful:
>
>
>//---------------------------------------------------------------------------
>
> // Class Session
> //Function for adding hidden field with session ID in form
> //if cookies off
> function hidden_id()
> {
> switch ($this->mode)
> {
> case "get":
> echo "<INPUT TYPE=\"HIDDEN\" NAME=\"" . $this->name .
>"\" VALUE=\"" . $this->id. "\">";
> }
> }
>
> Regards,
> KIR
>
>--
>----- ----- ----- ----- ----- ----- ----- -----
> Kirill Maximov; maximov <email protected> ICQ: 14796643
> Chief of Software Development Department,
> Astrive, Inc.
>
>
>-
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-- 
Michael Graham
magog <email protected>
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