<?php

namespace Stripe\Util;

/**
 * CaseInsensitiveArray is an array-like class that ignores case for keys.
 *
 * It is used to store HTTP headers. Per RFC 2616, section 4.2:
 * Each header field consists of a name followed by a colon (":") and the field value. Field names
 * are case-insensitive.
 *
 * In the context of stripe-php, this is useful because the API will return headers with different
 * case depending on whether HTTP/2 is used or not (with HTTP/2, headers are always in lowercase).
 */
class CaseInsensitiveArray implements \ArrayAccess, \Countable, \IteratorAggregate
{
    private $container = [];

    public function __construct($initial_array = [])
    {
        $this->container = \array_change_key_case($initial_array, \CASE_LOWER);
    }

    /**
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        return \count($this->container);
    }

    /**
     * @return \ArrayIterator
     */
    #[\ReturnTypeWillChange]
    public function getIterator()
    {
        return new \ArrayIterator($this->container);
    }

    /**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function offsetSet($offset, $value)
    {
        $offset = self::maybeLowercase($offset);
        if (null === $offset) {
            $this->container[] = $value;
        } else {
            $this->container[$offset] = $value;
        }
    }

    /**
     * @return bool
     */
    #[\ReturnTypeWillChange]
    public function offsetExists($offset)
    {
        $offset = self::maybeLowercase($offset);

        return isset($this->container[$offset]);
    }

    /**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function offsetUnset($offset)
    {
        $offset = self::maybeLowercase($offset);
        unset($this->container[$offset]);
    }

    /**
     * @return mixed
     */
    #[\ReturnTypeWillChange]
    public function offsetGet($offset)
    {
        $offset = self::maybeLowercase($offset);

        return isset($this->container[$offset]) ? $this->container[$offset] : null;
    }

    private static function maybeLowercase($v)
    {
        if (\is_string($v)) {
            return \strtolower($v);
        }

        return $v;
    }
}

• [F] ApiVersion.php
  Delete
• [F] CaseInsensitiveArray.php
  Delete
• [F] DefaultLogger.php
  Delete
• [F] LoggerInterface.php
  Delete
• [F] ObjectTypes.php
  Delete
• [F] RandomGenerator.php
  Delete
• [F] RequestOptions.php
  Delete
• [F] Set.php
  Delete
• [F] Util.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"
                        
}