Developer
<?php
namespace Faker\Calculator;
/**
* Utility class for validating ISBN-10
*/
class Isbn
{
/**
* @var string ISBN-10 validation pattern
*/
public const PATTERN = '/^\d{9}[0-9X]$/';
/**
* ISBN-10 check digit
*
* @see http://en.wikipedia.org/wiki/International_Standard_Book_Number#ISBN-10_check_digits
*
* @param string $input ISBN without check-digit
*
* @throws \LengthException When wrong input length passed
*/
public static function checksum(string $input): string
{
// We're calculating check digit for ISBN-10
// so, the length of the input should be 9
$length = 9;
if (strlen($input) !== $length) {
throw new \LengthException(sprintf('Input length should be equal to %d', $length));
}
$digits = str_split($input);
array_walk(
$digits,
static function (&$digit, $position): void {
$digit = (10 - $position) * $digit;
},
);
$result = (11 - array_sum($digits) % 11) % 11;
// 10 is replaced by X
return ($result < 10) ? (string) $result : 'X';
}
/**
* Checks whether the provided number is a valid ISBN-10 number
*
* @param string $isbn ISBN to check
*/
public static function isValid(string $isbn): bool
{
if (!preg_match(self::PATTERN, $isbn)) {
return false;
}
return self::checksum(substr($isbn, 0, -1)) === substr($isbn, -1);
}
}
Developer
Initiates a new payment transaction.
| Parameter | Type | Details |
|---|---|---|
| amount | decimal | Your Amount , Must be rounded at 2 precision. |
| currency | string | Currency Code, Must be in Upper Case (Alpha-3 code) |
| success_url | string | Enter your return or success URL |
| cancel_url | string (optional) | Enter your cancel or failed URL |
Request Example (guzzle)
<?php
require_once('vendor/autoload.php');
$client = new \GuzzleHttp\Client();
$response = $client->request('POST', $base_url.'create-order', [
'headers' => [
'Authorization' => 'Bearer '. $authorizationToken,
'accept' => 'application/json',
'content-type' => 'application/json',
],
'form_params' => [
'amount' => '$amount',
'currency' => 'currency',
'success_url' => 'success_url',
'cancel_url' => 'cancel_url',
],
]);
echo $response->getBody();
**Response: SUCCESS (200 OK)**
{
"message": {
"success": [
"Order created successfully."
]
},
"data": {
"redirect_url":"https://example.com/login/OISADFDFSDFSF",
"order_details":{
"amount" : "10",
"fixed_charge" : 2,
"percent_charge" : 1,
"total_charge" : 3,
"total_payable" : 13,
"currency" : "USD",
"expiry_time": "2024-04-25T06:48:35.984285Z",
"success_url": "http://127.0.0.1/nfcpay/user/transaction/success",
"cancel_url": "http://127.0.0.1/nfcpay/user/transaction/cancel"
}
},
"type": "success"
}
**Response: ERROR (400 FAILED)**
{
"message": {
"error": [
"Invalid token."
]
},
"data": null,
"type": "error"
}