(PHP Extension) AES Encryption ECB Mode with PKCS7 Padding

Duplicates the following C# code:

public static byte[] DecryptBySymmetricKey(string encryptedText, byte[] key)
  {
     string keyAsBase64 = Convert.ToBase64String(key);

     byte[] dataToDecrypt = Convert.FromBase64String(encryptedText);
     var keyBytes = key;
     AesManaged tdes = new AesManaged();
     tdes.KeySize = 256;
     tdes.BlockSize = 128;
     tdes.Key = keyBytes;
     tdes.Mode = CipherMode.ECB;
     tdes.Padding = PaddingMode.PKCS7;
     ICryptoTransform decrypt__1 = tdes.CreateDecryptor();
     byte[] deCipher = decrypt__1.TransformFinalBlock(dataToDecrypt, 0, dataToDecrypt.Length);
     tdes.Clear();
     string EK_result = Convert.ToBase64String(deCipher);
     return EK_result;
}

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$crypt = new CkCrypt2();

// In the C# code above that is to be duplicated here, use the base64 encoded key.
$keyAsBase64 = '...';
$encryptedBytesAsBase64 = '....';

$crypt->put_KeyLength(256);
$crypt->put_CryptAlgorithm('AES');
$crypt->put_CipherMode('ecb');
$crypt->put_PaddingScheme(0);
$crypt->SetEncodedKey($keyAsBase64,'base64');

$crypt->put_EncodingMode('base64');

// Pass the base64 representation of the encrypted data.
// (The EncodingMode indicates you are passing base64.)
$EK_result = $crypt->decryptStringENC($encryptedBytesAsBase64);

print $EK_result . "\n";

?>