<?php

/**************Agent Authentication**************/
require_once(get_cfg_var("doc_root") . "/ConnectPHP/Connect_init.php" );
initConnectAPI("admin", "adminpwd");

/******Use the “Crypto” versioned namespace*********/
use RightNow\Connect\Crypto\v1_4 as Crypto;  //这里引入

try{
     $md = new Crypto\MessageDigest();  
     $md->Algorithm->ID = 3; //SHA256 
     $md->Text = "This is a message to be digested using SHA256";
     echo "Data : " .$md->Text . "<br>";
     $md->hash();
     $hashed_text = $md->HashText;
     echo "Output : " .bin2Hex($hashed_text)."<br>";
}        
catch (Exception $err ){
     echo $err->getMessage();
}
?>

可以使用以下代码在 PHP 中复制此功能：

/*
The sample code in this document or accessed through this document is not
certified or supported by Oracle. It is intended for educational or testing
purposes only. Use of this sample code implies acceptance of the License Agreement
at https://www.oracle.com/downloads/licenses/standard-license.html .
*/

function standard_crypt($msg){
  try{
     $md = new Crypto\MessageDigest();
     $md->Algorithm->ID = 3; // SHA-256
     $md->Text = $msg;
     $md->hash();
     $hashed_text = $md->HashText;
     return ($hashed_text);
  } catch (Exception $err ){
       echo $err->getMessage();
  }
}
// Create Signature Hash
function custom_hmac($algo, $data, $key)
{
    $size = 64;
    $pack = chr(0x00);
    if (strlen($key) > $size) {
        $key = $algo($key);
    } else {
        $key = $key . str_repeat(chr(0x00), $size - strlen($key));
    }
    // Outter and Inner pad
    $opad = str_repeat(chr(0x5C), $size);
    $ipad = str_repeat(chr(0x36), $size);

    $k_ipad = $ipad ^ $key;
    $k_opad = $opad ^ $key;

    return $algo($k_opad.$algo($k_ipad.$data));
}

$data = "foo";
$secret = "bar";
$bin_hash = custom_hmac(‘standard_crypt‘, $data, $secret, false);
echo "HASH: ".bin2hex($bin_hash); //最后从二进制转换成十六进制，但是一般需要的是 base64_encode(),把bin2hex替换就好。

　function oauth_hmacsha1($key, $data) {
      return base64_encode(hmacsha1($key, $data));
  　　}
  function hmacsha1($key,$data) {
      $blocksize=64;
      $hashfunc=‘sha1‘;
      if (strlen($key)>$blocksize)
          $key=pack(‘H*‘, $hashfunc($key));
      $key=str_pad($key,$blocksize,chr(0x00));
      $ipad=str_repeat(chr(0x36),$blocksize);
      $opad=str_repeat(chr(0x5c),$blocksize);
      $hmac = pack(
                  ‘H*‘,$hashfunc(
                      ($key^$opad).pack(
                          ‘H*‘,$hashfunc(
                              ($key^$ipad).$data
                          )
                      )
                  )
              );
      return $hmac;
  }