INFO

//固定头信息
$key="ssdun";
//获取时间戳 UTC+8 (CST) 东八区
$timestamp=time();
//转换取 年月日时分 时间戳 (秒数为0)
$timestamp = strtotime(date("Y-m-d H:i"),$timestamp);
//取出时间戳前九位
$timestamp = substr($timestamp, 0, 9);
//拼接
$key=$key.$timestamp;
//字符串转十六进制
$hexKey = strToHex($key);
//bcc效验
$byte = HexToBytes($hexKey);
$bytes[] = bcc($byte);
$bcc=BytesToHex($bytes);
//效验完拼接 拼接效验后的16进制
$key=$key.$bcc;
//注 若key超出十六位数 截取前16位数即可
$key= substr($key, 0, 16);

$key="ssdun16286670643";
$JsonData={"app_secret":"1003","user_key":"c66f660a1a86e69f4a0c7d0e9db4612a8781558e8b0c5861a539b61dcb77cc6e","timestamp":1628667065,"sign":"f7b0c7ae3b1a0bdb049589c3f2140996"};
$encryptData=openssl_encrypt($data, 'aes-128-ecb', $key,0);
$encryptData="q0ND8eu/IsJPPHRhIjdaweGLiV3mDhnOPZU0D1i2o6Y2bRycEsy+Pxc/fVG+jMU3aon5G1r90Nff/wuyrvycqS+ArJz8O0FKbJ8CiSKtGvdqJx5mLbPrCZ5DSNUxVS/pTP3wM9SCBCwl6pr6aRVKJyTy961z21I/p0ercVjbYDuQP2iYarWBmTP6AwUf/jlrv0Bf5SZjbULKFxjtTFmM84LbjIiq5Sg40+AyagBJRkE=";
$data={"data"=>$encryptData};
POST(url,json_encode($data));

INFO