<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license,       |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/3_0.txt.                                  |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Stephan Schmidt <schst@php.net>                             |
// |          Aidan Lister <aidan@php.net>
// +----------------------------------------------------------------------+
//
// $Id: http_build_query.php,v 1.1 2004-10-26 18:22:16 kostja Exp $
//


/**
 * Replace function http_build_query()
 *
 * @category    PHP
 * @package     PHP_Compat
 * @link        http://php.net/function.http-build-query
 * @author      Stephan Schmidt <schst@php.net>
 * @author      Aidan Lister <aidan@php.net>
 * @version     $Revision: 1.1 $
 * @since       PHP 5
 * @require     PHP 4.0.1 (trigger_error)
 */
if (!function_exists('http_build_query'))
{
    function http_build_query ($formdata, $numeric_prefix = null)
    {
        // If $formdata is an object, convert it to an array
        if (is_object($formdata)) {
            $formdata = get_object_vars($formdata);
        }
    
        // Check we have an array to work with
        if (!is_array($formdata)) {
            trigger_error('http_build_query() Parameter 1 expected to be Array or Object. Incorrect value given.', E_USER_WARNING);
            return false;
        }

        // If the array is empty, return null
        if (empty($formdata)) {
            return null;
        }
        
        // Start building the query
        $tmp = array ();
        foreach ($formdata as $key => $val)
        {
            if (is_integer($key) && $numeric_prefix != null) {
                $key = $numeric_prefix . $key;
            }
    
            if (is_scalar($val)) {
                array_push($tmp, urlencode($key).'='.urlencode($val));
                continue;
            }

            // If the value is an array, recursively parse it
            if (is_array($val)) {
                array_push($tmp, __http_build_query($val, urlencode($key)));
                continue;
            }
        }

        return implode('&', $tmp);
    }

    // Helper function
    function __http_build_query ($array, $name)
    {
        $tmp = array ();
        foreach ($array as $key => $value)
        {
            if (is_array($value)) {
                array_push($tmp, __http_build_query($value, sprintf('%s[%s]', $name, $key)));
            }

            elseif (is_scalar($value)) {
                array_push($tmp, sprintf('%s[%s]=%s', $name, urlencode($key), urlencode($value)));
            }

            elseif (is_object($value)) {
                array_push($tmp, __http_build_query(get_object_vars($value), sprintf('%s[%s]', $name, $key)));
            }
        }

        return implode('&', $tmp);
    }
}
?>