youlegames/codes/agent/game/api/source/pay/common.php

<?php
define('USEDCHARSET', 'utf-8');

/// 接口返回用的信息类
class ResultObject
{
	public $error; /// 返回值: 0成功; 非0失败;
	public $error_code; /// 错误号
	public $msg; /// 错误信息
	public $data; /// 返回的数据

	public function ResultObject($string)
	{
		$this->error = 0;
		$this->error_code = 0;
		$this->msg = null;
		$this->data = null;

		$this->from_string($string);
	}


	public function to_array()
	{
		return (array)$this;
	}

	public function to_string()
	{
		return json_encode($this, JSON_UNESCAPED_UNICODE);
	}

	public function from_array($array)
	{
		foreach ($array as $key => $value)
		{
			if (property_exists($this, $key))
			{
				$this->$key = $value;
			}
		}

		return true;
	}

	public function from_string($string)
	{
		return $this->from_array((array)json_decode($string));
	}
}


/**
 * @note 获取当前页面的完整连接
 * @return string
 */
function getLocaleUrl($always_http = false)
{
	$is_https =
		(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ||
		(isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') ||
		(isset($_SERVER['REQUEST_SCHEME']) && $_SERVER['REQUEST_SCHEME'] == 'https');

	$request_scheme = $is_https ? 'https://' : 'http://';
	$hostname = $_SERVER['SERVER_NAME'];
	$hostport = (($is_https && '443' == $_SERVER['SERVER_PORT']) || (!$is_https && '80' == $_SERVER['SERVER_PORT'])) ? '' : ':' . intval($_SERVER['SERVER_PORT']);

	if ($always_http)
		return 'http://' . $hostname . $hostport;
	else
		return $request_scheme . $hostname . $hostport;
}

function getFullUrl($relatively_url, $always_http = false)
{
	if (mb_strstr($relatively_url, '/', false, USEDCHARSET) == $relatively_url)
		return getLocaleUrl($always_http) . $relatively_url;
	else
		return getLocaleUrl($always_http) . '/' . $relatively_url;
}

/**
 * @note 获取当前页面的域名
 * @return string
 */
function GetLocalRootUrl()
{
	$is_https =
		(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ||
		(isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') ||
		(isset($_SERVER['REQUEST_SCHEME']) && $_SERVER['REQUEST_SCHEME'] == 'https');

	$request_scheme = $is_https ? 'https://' : 'http://';
	$hostname = $_SERVER['SERVER_NAME'];
	$hostport = (($is_https && '443' == $_SERVER['SERVER_PORT']) || (!$is_https && '80' == $_SERVER['SERVER_PORT'])) ? '' : ':' . intval($_SERVER['SERVER_PORT']);

	return $request_scheme . $hostname . $hostport;
}


/**
 * @date 2017-03-04
 * @note 给参数按key的顺序排序。（支持递归）
 * @param mixed $parameter 要排序的参数
 * @return array
 * @auth 应俊
 */
function SortParam($parameter)
{
	$parameter = (array)$parameter;
	foreach ($parameter as $k => $v)
	{
		if (is_array($v) || is_object($v))
		{
			$parameter[$k] = SortParam($v);
		}
	}

	// 调用strcmp函数来排序，该函数区分大小写。
	uksort($parameter, 'strcmp');
	return $parameter;
}


/**
 * @date 2017-03-06
 * @note 转换参数成字符串形式按key=value的形式，用&分隔）。
 * @param mixed $parameter 要转换的参数
 * @return string
 * @auth 应俊
 */
function ConvertParam($parameter)
{
	$parameter = (array)$parameter;
	$return = '';
	foreach ($parameter as $k => $v)
	{
		if (is_array($v) || is_object($v))
		{
			$return .= sprintf('&%s={%s}', $k, ConvertParam($v));
		}
		else
		{
			$return .= sprintf('&%s=%s', $k, $v);
		}
	}

	$sublen = mb_strlen('&', USEDCHARSET);
	$retlen = mb_strlen($return, USEDCHARSET);
	$return = mb_substr($return, $sublen, $retlen - $sublen, USEDCHARSET);
	return $return;
}


/**
 * @date 2017-03-04
 * @note 为参数生成签名
 * @param mixed $parameter 要签名的参数
 * @param string $signkey 签名key
 * @return string
 * @auth 应俊
 */
function SignParameter($parameter, $signkey = '')
{
	// 1：先把参数按参数名（key）从小到大排序
	$parameter = SortParam($parameter);

	// 2：连接参数成一个字符串（按key=value的形式，用&分隔）。
	$return = ConvertParam($parameter);

	// 3：结尾加上key=签名key
	$return .= '&key=' . $signkey;

	// 4：md5加密这个字符串
	return md5($return);
}


/**
 * @param mixed $data
 * @return array|mixed
 */
function ChangePostData($data)
{
	switch (gettype($data))
	{
		case 'array':
		{
			foreach ($data as $key => $value)
			{
				$data[$key] = ChangePostData($value);
			}
			break;
		}

		case 'object':
		{
			$array = (array)$data;
			foreach ($array as $key => $value)
			{
				$data->$key = ChangePostData($value);
			}
			break;
		}

		default:
		{
			$data = preg_replace_callback('/\+/', function ($r) { return '%2B'; }, $data);
			$data = preg_replace_callback('/\&/', function ($r) { return '%26'; }, $data);
			break;
		}
	}

	return $data;
}


/**
 * @note 发送post请求
 * @param string $url
 * @param mixed $data
 * @return string
 */
function SendPost($url, $data)
{
	$data = http_build_query(ChangePostData($data));

	$opts = array(
		'http' => array(
			'method' => 'POST',
			'header' => "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($data) . "\r\n",
			'content' => $data,
		),
	);

	$context = stream_context_create($opts);
	$ret = file_get_contents($url, false, $context);
	$ret = trim($ret, "\xEF\xBB\xBF");
	return $ret;
}



/**
 * @note 从参数中过滤不需要的参数
 * @param array|null $ignores 要过滤的参数列表(参数名)
 * @param array|null $parameters 目标参数列表
 * @return array
 */
function GetAttachParameters($ignores = null, $parameters = null)
{
	$return = (array)(empty($parameters) ? $_REQUEST : $parameters);
	if (!empty($ignores))
	{
		foreach ($return as $k => $v)
		{
			if (in_array($k, $ignores))
				unset($return[$k]);
		}
	}

	return $return;
}