安卓系统,PHP加密/解密-填充问题

在iOS上使用的代码很好，并试图将代码转换为Android，我们有以下代码，但似乎有填充问题，谁能提供帮助?

使用MD5作为密钥

Java (Android)

public class AES256Cipher {
    public static byte[] ivBytes = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

    public static String AES_Encode(String str, String key) throws java.io.UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
        byte[] textBytes = str.getBytes("UTF-8");
        AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
             SecretKeySpec newKey = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
             Cipher cipher = null;
        cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, newKey, ivSpec);
        return Base64.encodeToString(cipher.doFinal(textBytes), 0);
    }
    public static String AES_Decode(String str, String key) throws java.io.UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
        byte[] textBytes =Base64.decode(str,0);
        //byte[] textBytes = str.getBytes("UTF-8");
        AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
        SecretKeySpec newKey = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, newKey, ivSpec);
        return new String(cipher.doFinal(textBytes), "UTF-8");
    }
}

<?php
function encrypt ($key, $value)
{                
    $padSize = 16 - (strlen ($value) % 16) ;
    $value = $value . str_repeat (chr ($padSize), $padSize) ;
    $output = mcrypt_encrypt (MCRYPT_RIJNDAEL_128, $key, $value, MCRYPT_MODE_CBC, str_repeat(chr(0),16)) ;                
    return base64_encode ($output) ;        
}
function decrypt ($key, $value)        
{                       
    $value = base64_decode ($value) ;                
    $output = mcrypt_decrypt (MCRYPT_RIJNDAEL_128, $key, $value, MCRYPT_MODE_CBC, str_repeat(chr(0),16)) ;                
    $valueLen = strlen ($output) ;
    if ( $valueLen % 16 > 0 )
        $output = "";
    $padSize = ord ($output{$valueLen - 1}) ;
    if ( ($padSize < 1) or ($padSize > 16) )
        $output = "";                // Check padding.                
    for ($i = 0; $i < $padSize; $i++)
    {
        if ( ord ($output{$valueLen - $i - 1}) != $padSize )
            $output = "";
    }
    $output = substr ($output, 0, $valueLen - $padSize) ;
    return $output;        
} 
?>

Java端输出工作正常，但是当代码发送到PHP时，你会得到一个剩余的输出，这让我们认为这是一个填充问题，任何帮助将是伟大的。