为什么要进行签名，我们在进行数据请求的时候，为了防止数据被人截取，造成不好的影响，所以我们在进行数据请求的时候，需要进行签名验证，进行签名的原理是：客户端和服务端使用同样的签名算法，来计算签名，当客户端提交的签名，和服务端提供的签名一致的时候，就签名成功。
这里是仿照微信验证的签名算法：需要用到 appid 和 appSecret。
具体实现：
/* 签名算法 */public function sign(){ ???$appid = "dd9818820b95ec8e3d"; ???$appSecret = "e5178f68c37c3a24772e463deb8cc4d8"; ???$postData = array( ???????‘appid‘=>$appid, ???????‘timestamp‘=>‘1544883104‘, ???????‘nonce‘=>md5(md5(‘dd9818820b95ec8e3d‘).‘1544883104‘), ???????‘sign‘=>‘B016B5D43749E26775B260FBED08DDCA‘ ???); ???echo $this->getSignature()."<br>"; ???echo $this->checkSignature($postData)."<br>"; ???die;}public function checkSignature($data = null){ ???$appid = "dd9818820b95ec8e3d"; ???$appSecret = "e5178f68c37c3a24772e463deb8cc4d8"; ???if(!$data){return false;}; ???$clientSign = $data[‘sign‘]; ???$array = array(); ???$array[‘appid‘] = $data[‘appid‘]; ???$array[‘timestamp‘] = $data[‘timestamp‘]; ???$array[‘nonce‘] = $data[‘nonce‘]; ???ksort($array); ???$str = ""; ???foreach ($array as $k => $v) { ???????$str.= $k.$v; ???} ???$restr = $str.$appSecret; ???$reserverSign = strtoupper(md5($restr)); ???if($clientSign == $reserverSign){ ???????return true; ???}; ???return false;}public function getSignature($array = array()){ ???$appid = "dd9818820b95ec8e3d"; ???$appSecret = "e5178f68c37c3a24772e463deb8cc4d8"; ???$array = array( ???????‘appid‘=>$appid, ???????‘timestamp‘=>‘1544883104‘, ???????‘nonce‘=>md5(md5(‘dd9818820b95ec8e3d‘).‘1544883104‘), ???); ???// 1.对加密数组进行字典排序 防止因为参数顺序不一致而导致下面拼接加密不同 ???ksort($array); ???// 2.将key和value进行拼接 ???$str = ""; ???foreach ($array as $k => $v) { ???????$str.= $k.$v; ???} ???// 3.通过sha1(或md5)加密并转化为大写 ???$restr = $str.$appSecret; ???$sign = strtoupper(md5($restr)); ???return $sign;}public function getAppid($phone = "18314416390"){ ???return ‘dd‘.substr(md5(md5(time()).md5($phone).mt_rand(1,1000000)),0,16);}public function getAppSecret($phone = "18314416390"){ ???$key = ‘|Hx@IP9O]>6KFX\Z2(r[/?st1}^CNh+W4oQeDgS‘; ???return md5(md5($key).md5($phone).md5(time()).mt_rand(1,1000000));}php---进行签名验证
原文地址：https://www.cnblogs.com/e0yu/p/10125304.html