PHP to do RSA signature generation order

Combination signature $a=time (); $b =substr ($a,  1);//Generate random order number $orderid=  $b. Mt_rand (10000,99999);//co-Identity ID, 16-bit pure number starting with 2088 $mygoods [' partner ']= "2088011744308664";//Merchant account $mygoods[' seller ']= "[email protected]";//Order number $mygoods[' Out_ Trade_no ']= $orderid;//Theme $mygoods[' subject ']= $goods _name;//Product description Information $mygoods[' body ']= $goods _infro;//commodity price $mygoods[' Total_fee ']= $score;//server-side asynchronous response Address $mygoods[' Notify_url ']=  "http://211.149.220.47/php/notify_url.php";//Sort $ Mygoods = argsort ($mygoods);//Stitching $mystr = createlinkstring ($mygoods);//Signature $sign =  Rsasign ($MYSTR);//UrlEncode transcoding $sign = urlencode ($sign) for signatures,//Generate final signature information $orderinfor =  $mystr. " &sign= ". $sign." &sign_type=rsa ";/** *  all elements of the array, using" & "characters in the pattern of" parameter = parameter value "to string  *  @param   $para   Need to splice the array  * return  stitch complete After the string  */function createlinkstring ($para)  {$arg    =  "";while  (list  ($key,  $val)  = each  ($para)  {$arg. = $key. " = ". $vaL. " & ";} Remove the last & character $arg = substr ($arg, 0,count ($arg)-2);//If an escape character exists, then remove the escape if (GET_MAGIC_QUOTES_GPC ()) {$arg  = stripslashes ($arg);} return  $arg;} /** *  array sort  *  @param   $para   sort before sorting  * return  sorted array  */function  argsort ($para)  {ksort ($para); reset ($para);return  $para;} /** * rsa Signature  *  @param   $data   data to be signed  *  @param   $private _key_path  Merchant private key file path  * return  signature result  */function rsasign ($data,  $private _key_path)  {      $priKey  = file_get_contents ($private _key_path);     $res  =  openssl_get_privatekey ($priKey);     openssl_sign ($data,  $sign,  $res);     openssl_free_key ($res);//base64 Code      $sign  = base64_ Encode ($sign);    return  $sign;}

PHP to do RSA signature generation order