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This article is about how to use the format of url key-value pairs in dictionary order to concatenate a string md5 encrypted signature, the editor thinks it is very practical, so I share it for you to learn. I hope you can get something after reading this article, without saying much, let's take a look at it.

Concatenate all incoming non-null parameters into the string string1 in lexicographical order using the format of url key-value pairs

String string1 = key1=value1&key2=value2..

The string string2 is obtained by splicing the signature at the end of the string string1.

String string2 = string2 + & key name = 8934e7d15453e97507ef794cf7b0519d

Then encrypt the string2 with MD5, and convert the encrypted 32-bit string to uppercase. The resulting value is key_sign.

$payConfig = array ('pay_ver' = >' 1009, 'pay_type' = >' 010', 'service_id' = >' 015', 'merchant_no' = >', 'terminal_id' = >', 'terminal_trace' = > $orderInfo [' order_id'], 'terminal_time' = > date ("YmdHis") 'total_fee' = > $totalFee,' sub_appid' = >'', 'open_id' = > $openid,' notify_url' = > "http://www.demo.com") $access_token = "da3c47c2a8cd47e9be0868712dae0000"; $payConfig ['key_sign'] = self::getSign ($payConfig, $access_token); / / signed function getSign ($payConfig, $key) {ksort ($payConfig); $str = ""; foreach ($payConfig as $k = > $v) {$str = $str. $k. "=". $v. "&";} $str=$str. "access_token=". $key; return strtoupper (md5 ($str));} / / submit function postPay ($post_data) {$postUrl = ""; $curl = curl_init () Curl_setopt_array ($curl, array (CURLOPT_URL = > $postUrl, CURLOPT_RETURNTRANSFER = > true, CURLOPT_ENCODING = > "", CURLOPT_MAXREDIRS = > 10, CURLOPT_TIMEOUT = > 0, CURLOPT_FOLLOWLOCATION = > false, CURLOPT_HTTP_VERSION = > CURL_HTTP_VERSION_1_1, CURLOPT_CUSTOMREQUEST = > "POST" CURLOPT_POSTFIELDS = > json_encode ($post_data), CURLOPT_HTTPHEADER = > array ("Content-Type: application/json"),) $response = curl_exec ($curl); var_dump ($response); curl_close ($curl); return $response;} above is how to use the format of url key-value pairs in lexicographical order to assemble a string md5 encrypted signature. Xiaobian believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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