<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;

use TypeError;

/**
 *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
 *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */

/**
 * Class Binary
 *
 * Binary string operators that don't choke on
 * mbstring.func_overload
 *
 * @package ParagonIE\ConstantTime
 */
abstract class Binary
{
    /**
     * Safe string length
     *
     * @ref mbstring.func_overload
     *
     * @param string $str
     * @return int
     */
    public static function safeStrlen(string $str): int
    {
        if (\function_exists('mb_strlen')) {
            // mb_strlen in PHP 7.x can return false.
            /** @psalm-suppress RedundantCast */
            return (int) \mb_strlen($str, '8bit');
        } else {
            return \strlen($str);
        }
    }

    /**
     * Safe substring
     *
     * @ref mbstring.func_overload
     *
     * @staticvar boolean $exists
     * @param string $str
     * @param int $start
     * @param ?int $length
     * @return string
     *
     * @throws TypeError
     */
    public static function safeSubstr(
        string $str,
        int $start = 0,
        $length = null
    ): string {
        if ($length === 0) {
            return '';
        }
        if (\function_exists('mb_substr')) {
            return \mb_substr($str, $start, $length, '8bit');
        }
        // Unlike mb_substr(), substr() doesn't accept NULL for length
        if ($length !== null) {
            return \substr($str, $start, $length);
        } else {
            return \substr($str, $start);
        }
    }
}

• [F] Base32.php
  Delete
• [F] Base32Hex.php
  Delete
• [F] Base64.php
  Delete
• [F] Base64DotSlash.php
  Delete
• [F] Base64DotSlashOrdered.php
  Delete
• [F] Base64UrlSafe.php
  Delete
• [F] Binary.php
  Delete
• [F] EncoderInterface.php
  Delete
• [F] Encoding.php
  Delete
• [F] Hex.php
  Delete
• [F] RFC4648.php
  Delete

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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}