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curl --location 'https://gateway.standingtech.com/api/v4/sms/send' \
--header 'Authorization: Bearer {{API_KEY}}' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--data '{
"recipient":"9647502171212",
"sender_id":"SenderID",
"type":"whatsapp",
"message":"123654",
"lang":"en"
}'

<?php
require "guzzle/vendor/autoload.php";
use GuzzleHttp\Client;

$client = new Client([
    // Base URI is used with relative requests
    'base_uri' => 'https://sms.standingtech.com/api/v3/sms/',
]);
$now = date("Y-m-d H:i:s");
$body = <<<DATA
{"recipient":"9647xxxxxxxxx",
"sender_id":"Standing",
"type":"plain",
"message":"This is a test message using Guzzle at $now"
}
DATA;

$response = $client->request('POST', 'send', [
'headers' => [
    'Authorization'     => 'Bearer API_KEY',
    'Content-Type'     	=> 'application/json',
    'Accept'     		=> 'application/json',
    ],
//'stream' => true,
'body' => $body,
//'sink' => 'temp.txt',
//'verify' => false,

]);

$response = $response->getBody()->getContents();

echo "<pre>";
print_r(json_decode($response, true));

<?php
$url = "https://sms.standingtech.com/api/v3/sms/send";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

$headers = array(
   "Authorization: Bearer API_KEY",
   "Content-Type: application/json",
   "Accept: application/json",
);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);

$data = <<<DATA
{"recipient":"9647xxxxxxxxx",
"sender_id":"YourName",
"type":"plain",
"message":"This is a test message"
}
DATA;

curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

//for debug only!
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

$resp = curl_exec($curl);
curl_close($curl);
var_dump($resp);

API Error Codes

General Errors

• 1000 – Bad Request – The request could not be understood
• 1001 – Invalid Request – Check the API Endpoint
• 1002 – Unauthorized – No API Key found
• 1003 – Invalid format
• 1004 – Missing SenderID
• 1005 – Forbidden – Access denied
• 1006 – Resource not found
• 1007 – Request method not allowed
• 1008 – Too many requests – Rate limit exceeded
• 1009 – Internal Server Error
• 1010 – Bad Request – Do not use Auto here
• 1011 – Invalid format of WhatsApp Request
• 1012 – Bad Request – type or Channel was empty or Invalid
• 1013 – Bad Request – Fallback was empty or Invalid use only (none, whatsapp, telegram)

Authentication Errors

• 1100 – Authentication required
• 1101 – Invalid API Key
• 1102 – Expired API Key
• 1103 – Invalid or missing token
• 1104 – Access denied – Insufficient permissions
• 1105 – Account suspended or blocked
• 1106 – Not allowed to use this SenderID for the given API KEY
• 1107 – Your account has been disabled please contact admin

Input Validation Errors

• 1200 – Missing required parameter(s)
• 1201 – Invalid parameter value
• 1202 – Invalid JSON format
• 1203 – Message body cannot be empty
• 1204 – Invalid phone number format
• 1205 – Sender ID contains invalid characters
• 1206 – Sender ID is too long
• 1207 – Receiver number is required
• 1208 – Receiver number is blacklisted
• 1209 – Please set your SenderID in the sender_id parameter!
• 1210 – Pricing Error for Given SenderID please contact admin now
• 1211 – International numbers disabled or Invalid Number
• 1212 – Invalid Parameters – code must be set to Auto
• 1213 – Invalid Parameters – Param2 is missing
• 1214 – Invalid Parameters – Param3 is missing
• 1215 – Invalid or missing template ID
• 1216 – Invalid Phone Number for Iraq
• 1217 – Invalid Type
• 1218 – Only sms/telegram allowed as fallback for WhatsApp
• 1219 – Message Format was invalid

Rate Limiting & Quota Errors

• 1300 – Too many requests – Slow down
• 1301 – Daily quota exceeded
• 1302 – Monthly quota exceeded
• 1303 – Message sending limit reached

Database & Resource Errors

• 1400 – Database connection error
• 1401 – Database query failed
• 1402 – Record not found
• 1403 – Duplicate entry – Already exists

SMS & Messaging Errors

• 1500 – Invalid SMS content
• 1501 – SMS message too long
• 1502 – SMS sending failed
• 1503 – Insufficient balance to send message
• 1504 – SMS gateway unavailable
• 1505 – SMS delivery failed
• 1506 – Invalid OTP request
• 1507 – expired
• 1508 – OTP already used
• 1509 – Missing (Code or ID) parameter
• 1510 – Invalid ID in the request
• 1511 – Invalid Phone number in the request
• 1512 – failed
• 1513 – Invalid Format – Message or Param is missing

API-Specific Errors

• 1600 – API endpoint not found
• 1601 – Unsupported API version
• 1602 – Unsupported media type
• 1603 – Bad gateway – Third-party service issue

Payment Errors

• 1700 – Payment required
• 1701 – Invalid payment method
• 1702 – Payment failed
• 1703 – Subscription expired
• 1704 – Transaction declined

Server & Unexpected Errors

• • 1800 – Unexpected server error
  • 1801 – Service temporarily unavailable
  • 1802 – Configuration error
  • 1803 – Server under maintenance
  • 1804 – Unknown Error, Please contact admin

Security & Fraud Detection Errors

• 1900 – Suspicious activity detected
• 1901 – Account flagged for fraud
• 1902 – API abuse detected
• 1903 – IP address blacklisted
• 1904 – Access denied due to country restrictions
• 1905 – Daily Limit Exceeded please contact admin to whitelist required numbers
• 1906 – Hourly Limit Exceeded please contact admin to whitelist required numbers
• 1907 – Only Two OTP request allowed in 30 seconds