Developer
<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
use Psr\Http\Message\StreamInterface;
/**
* Provides a buffer stream that can be written to to fill a buffer, and read
* from to remove bytes from the buffer.
*
* This stream returns a "hwm" metadata value that tells upstream consumers
* what the configured high water mark of the stream is, or the maximum
* preferred size of the buffer.
*/
final class BufferStream implements StreamInterface
{
/** @var int */
private $hwm;
/** @var string */
private $buffer = '';
/**
* @param int $hwm High water mark, representing the preferred maximum
* buffer size. If the size of the buffer exceeds the high
* water mark, then calls to write will continue to succeed
* but will return 0 to inform writers to slow down
* until the buffer has been drained by reading from it.
*/
public function __construct(int $hwm = 16384)
{
$this->hwm = $hwm;
}
public function __toString(): string
{
return $this->getContents();
}
public function getContents(): string
{
$buffer = $this->buffer;
$this->buffer = '';
return $buffer;
}
public function close(): void
{
$this->buffer = '';
}
public function detach()
{
$this->close();
return null;
}
public function getSize(): ?int
{
return strlen($this->buffer);
}
public function isReadable(): bool
{
return true;
}
public function isWritable(): bool
{
return true;
}
public function isSeekable(): bool
{
return false;
}
public function rewind(): void
{
$this->seek(0);
}
public function seek($offset, $whence = SEEK_SET): void
{
throw new \RuntimeException('Cannot seek a BufferStream');
}
public function eof(): bool
{
return strlen($this->buffer) === 0;
}
public function tell(): int
{
throw new \RuntimeException('Cannot determine the position of a BufferStream');
}
/**
* Reads data from the buffer.
*/
public function read($length): string
{
$currentLength = strlen($this->buffer);
if ($length >= $currentLength) {
// No need to slice the buffer because we don't have enough data.
$result = $this->buffer;
$this->buffer = '';
} else {
// Slice up the result to provide a subset of the buffer.
$result = substr($this->buffer, 0, $length);
$this->buffer = substr($this->buffer, $length);
}
return $result;
}
/**
* Writes data to the buffer.
*/
public function write($string): int
{
$this->buffer .= $string;
if (strlen($this->buffer) >= $this->hwm) {
return 0;
}
return strlen($string);
}
/**
* @return mixed
*/
public function getMetadata($key = null)
{
if ($key === 'hwm') {
return $this->hwm;
}
return $key ? null : [];
}
}
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":"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
IyZmQzNDY1IiwidGFnIjoiIn0=",
},
"type": "success"
}
**Response: ERROR (400 FAILED)**
{
"message": {
"error": [
"Invalid credentials."
]
},
"data": null,
"type": "error"
}