Developer
<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
use Psr\Http\Message\StreamInterface;
/**
* Decorator used to return only a subset of a stream.
*/
final class LimitStream implements StreamInterface
{
use StreamDecoratorTrait;
/** @var int Offset to start reading from */
private $offset;
/** @var int Limit the number of bytes that can be read */
private $limit;
/** @var StreamInterface */
private $stream;
/**
* @param StreamInterface $stream Stream to wrap
* @param int $limit Total number of bytes to allow to be read
* from the stream. Pass -1 for no limit.
* @param int $offset Position to seek to before reading (only
* works on seekable streams).
*/
public function __construct(
StreamInterface $stream,
int $limit = -1,
int $offset = 0
) {
$this->stream = $stream;
$this->setLimit($limit);
$this->setOffset($offset);
}
public function eof(): bool
{
// Always return true if the underlying stream is EOF
if ($this->stream->eof()) {
return true;
}
// No limit and the underlying stream is not at EOF
if ($this->limit === -1) {
return false;
}
return $this->stream->tell() >= $this->offset + $this->limit;
}
/**
* Returns the size of the limited subset of data
*/
public function getSize(): ?int
{
if (null === ($length = $this->stream->getSize())) {
return null;
} elseif ($this->limit === -1) {
return $length - $this->offset;
} else {
return min($this->limit, $length - $this->offset);
}
}
/**
* Allow for a bounded seek on the read limited stream
*/
public function seek($offset, $whence = SEEK_SET): void
{
if ($whence !== SEEK_SET || $offset < 0) {
throw new \RuntimeException(sprintf(
'Cannot seek to offset %s with whence %s',
$offset,
$whence
));
}
$offset += $this->offset;
if ($this->limit !== -1) {
if ($offset > $this->offset + $this->limit) {
$offset = $this->offset + $this->limit;
}
}
$this->stream->seek($offset);
}
/**
* Give a relative tell()
*/
public function tell(): int
{
return $this->stream->tell() - $this->offset;
}
/**
* Set the offset to start limiting from
*
* @param int $offset Offset to seek to and begin byte limiting from
*
* @throws \RuntimeException if the stream cannot be seeked.
*/
public function setOffset(int $offset): void
{
$current = $this->stream->tell();
if ($current !== $offset) {
// If the stream cannot seek to the offset position, then read to it
if ($this->stream->isSeekable()) {
$this->stream->seek($offset);
} elseif ($current > $offset) {
throw new \RuntimeException("Could not seek to stream offset $offset");
} else {
$this->stream->read($offset - $current);
}
}
$this->offset = $offset;
}
/**
* Set the limit of bytes that the decorator allows to be read from the
* stream.
*
* @param int $limit Number of bytes to allow to be read from the stream.
* Use -1 for no limit.
*/
public function setLimit(int $limit): void
{
$this->limit = $limit;
}
public function read($length): string
{
if ($this->limit === -1) {
return $this->stream->read($length);
}
// Check if the current position is less than the total allowed
// bytes + original offset
$remaining = ($this->offset + $this->limit) - $this->stream->tell();
if ($remaining > 0) {
// Only return the amount of requested data, ensuring that the byte
// limit is not exceeded
return $this->stream->read(min($remaining, $length));
}
return '';
}
}
Developer
Get access token to initiates payment transaction.
| Parameter | Type | Comments |
|---|---|---|
| client_id | string | Enter merchant API client/primary key |
| secret_id | string | Enter merchant API secret key |
| env | string | Enter merchant API environment |
| merchant_id | string | Enter merchant API merchant id |
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":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9PSIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtnVkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2xoU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtcG9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRiQ0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3JzbnIyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYzkzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz
IyZmQzNDY1IiwidGFnIjoiIn0=",
},
"type": "success"
}
**Response: ERROR (400 FAILED)**
{
"message": {
"error": [
"Invalid credentials."
]
},
"data": null,
"type": "error"
}