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How Do I Send a “+” Sign in an SMS Using the API?

admin
Updated on 03/03/2025

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Sending a “+” sign in an SMS via SMSGatewayCenter’s API requires proper URL encoding to ensure the character is interpreted correctly. Follow these steps:

URL Encode the “+” Sign: In your SMS Gateway API request, encode the “+” sign as %2B. For example, if you want to send a message like “Contact +919876543210,” encode it as “Contact%2B919876543210” in the msg parameter.

Use Sample Scripts: Refer to our SMS API documentation and sample scripts (e.g., PHP CURL or HTTP requests) to implement URL encoding. In PHP, you can use urlencode():

$message = urlencode("Contact +919876543210");
curl -X POST \
  https://unify.smsgateway.center/SMSApi/send \
  -H 'apikey: secretkey' \
  -H 'cache-control: no-cache' \
  -H 'content-type: application/x-www-form-urlencoded' \
  -d 'userid=user&password=userpass&senderid=SENDER&sendMethod=quick&msgType=text&mobile=919xxxxxxxxx9&msg=$message&duplicateCheck=true&output=json'

Test the Request: Send a test SMS to verify the “+” sign appears correctly in the message. Ensure your sender ID and recipient number are properly formatted.


If issues persist, check our troubleshooting tips or contact support for assistance.

Updated on 03/03/2025