Sample USSD Application

index.php

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<?php
        #We obtain the data which is contained in the post url on our server.

        $text=$_GET['USSD_STRING'];
        $phonenumber=$_GET['MSISDN'];
        $serviceCode=$_GET['serviceCode'];


        $level = explode("*", $text);
        if (isset($text)) {
   

        if ( $text == "" ) {
            $response="CON Welcome to the registration portal.\nPlease enter you full name";
        }

        if(isset($level[0]) && $level[0]!="" && !isset($level[1])){

          $response="CON Hi ".$level[0].", enter your ward name";
             
        }
        else if(isset($level[1]) && $level[1]!="" && !isset($level[2])){
                $response="CON Please enter you national ID number\n"; 

        }
        else if(isset($level[2]) && $level[2]!="" && !isset($level[3])){
            //Save data to database
            $data=array(
                'phonenumber'=>$phonenumber,
                'fullname' =>$level[0],
                'electoral_ward' => $level[1],
                'national_id'=>$level[2]
                );

            

            $response="END Thank you ".$level[0]." for registering.\nWe will keep you updated"; 
    }

        header('Content-type: text/plain');
        echo $response;

    }

?>

Thanks buddy for your assistance. I was figuring out how to start learning USSD codes.

am new in this and i want to test the code
where do i see "open postman client"

Come on man...this is a sham!
That wont give you such an interface on your phone that is a blueprint.

How can i go back to the previous level?
e.g: If an user is on level 3 and he wants to go to level 2 without quitting the current session.
How can be this done?

how can i get this code and run it?

To help you guys run the code please try to use Africa's talking API https://africastalking.com/
It helped me

Thanks man

I appreciate this. It's simple example to start with USSD.

Come on man...this is a sham!
That wont give you such an interface on your phone that is a blueprint.
@DavidInnocent You should have read the title of the gist.

Code is fine. will it work on gsm phones? Could you please guide me step by step to build application which we can run on old phones

This is a good start thanks

how can add a back button option in this ussd

Thank you for this!

is it working on kannel open source gatway

Thank you so much

Thank you