test.php

<?php
function decrypt($data) {
    if (is_array($data)) {
        foreach ($data as $key => $value) {
            $data[$key] = $this->decrypt($value);
        }
        return $data;
    }
    if (empty($data) || USE_ENCRYPTION == false) {
        return $data;
    }
    $cipher = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
    $key = substr('mykey', 0, mcrypt_enc_get_key_size($cipher));
    $iv = '00000000';

    // 128-bit Blowfish encryption: 
    if (mcrypt_generic_init($cipher, $key, $iv) != - 1) {
        // PHP pads with NULL bytes if $cleartext IS NOT a multiple of the block size .. 
        $data = base64_decode($data);
        if (empty($data)) {
            return '';
        }
        $cleartext = mdecrypt_generic($cipher, $data);
        mcrypt_generic_deinit($cipher);
    }

    // Remove the padding. 
    $pad = ord(substr($cleartext, strlen($cleartext) - 1));
    if ($pad > 0 & $pad <= 8) {
        $cleartext = substr($cleartext, 0, strlen($cleartext) - $pad);
    }

    return urldecode($cleartext);
}
function encrypt($cleartext) {
    if (is_array($cleartext)) {
        foreach ($cleartext as $key => $value) {
            $cleartext[$key] = $this->encrypt($value);
        }
        return $cleartext;
    }
    if (empty($cleartext) || USE_ENCRYPTION == false) {
        return $cleartext;
    }
    $cipher = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
    $key = substr('mykey', 0, mcrypt_enc_get_key_size($cipher));
    $iv = '00000000';

    // add the padding. 
    $cleartext_length = strlen($cleartext) % 8;
    for ($i = $cleartext_length; $i < 8; $i++) {
        $cleartext .= chr(8 - $cleartext_length);
    }

    $ciphertext = '';
    // 128-bit Blowfish encryption: 
    if (mcrypt_generic_init($cipher, $key, $iv) != - 1) {
        // PHP pads with NULL bytes if $cleartext IS NOT a multiple of the block size .. 
        if (empty($cleartext)) {
            return '';
        }
        $ciphertext = mcrypt_generic($cipher, $cleartext);
        mcrypt_generic_deinit($cipher);
    }

    return base64_encode($ciphertext);
}
echo encrypt('thevalue'); // wTHzxfxLHdMm/JMFnoh0hciS/JADvFFg
?>