new_sdk_wu/www/new_sdk/vendor/kjpaySdk/getSign.php

<?php
/**
 * 获取IP地址
 * return ip
 */
function get_wx_ip(){
    $ip = "unknown";
   if(isset($_SERVER['REMOTE_ADDR'])){
        $ip = $_SERVER['REMOTE_ADDR'];
   }elseif(getenv("REMOTE_ADDR")){
        $ip = getenv("REMOTE_ADDR");
   }elseif(isset($_SERVER['HTTP_CLIENT_IP'])){
       $ip = $_SERVER['HTTP_CLIENT_IP'];
   } elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
       $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
       $pos = array_search('unknown', $arr);
       if (false !== $pos)
           unset($arr[$pos]);
       $ip = trim($arr[0]);
   }
    return $ip;
}

/**
 * 除去数组中的空值和签名参数
 * @param $para 签名参数组
 * return 去掉空值与签名参数后的新签名参数组
 */
function paraFilters($para) {
    $para_filter = array();
    if($para){
        foreach ($para as $key=>$val){
            if($key == "sign" || $key == "signature" || $val == "")
                continue;
            else
                $para_filter[$key] = $para[$key];
        }
    }
    return $para_filter;
}

/**
 * 对数组排序
 * @param $para 排序前的数组
 * return 排序后的数组
 */
function argSorts($para) {
    ksort($para);
    reset($para);
    return $para;
}

/**
 * 签名验证-快接支付
 * $datas 数据数组
 * $key 密钥
 */
function local_sign($datas = array(), $key = ''){
    $str = urldecode(http_build_query(argSorts(paraFilters($datas))));
    $sign = md5($str."&key=".$key);
    return $sign;
}

/**
 * 签名验证-快接支付
 * $datas 数据数组
 * $key 密钥
 */
function getdata($url, $param){
    $content = '';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

    curl_setopt($ch, CURLOPT_POSTFIELDS, $param);

    curl_setopt($ch, CURLOPT_TIMEOUT,6);
    $content = curl_exec($ch);

    //如果发现异常，排查下curl错误
    //echo "curl错误：".curl_error($ch);

    curl_close($ch);
    return $content;
}
?>