php: get input and write text file, then return

Put the following codes in the server side to receive the inputs from Apps.

<?php

     

    // assign the input to the variables

    $method = $_POST['method'];

    $name = $_POST['name']; // variable to be received by server
    $id = $_POST['userID']; // variable to be received by server

    echo " user name: ".$name ." id: ". $id. " method: ". $method; // echo the received data to the Apps

    

    

    // write text file with above two variables

    $file = "file.txt";

    $fh = fopen( $file, 'w' );

    $carriageReturn = "\n";

    fwrite( $fh, $method );

    fwrite( $fh, $carriageReturn );

    fwrite( $fh, $name );

    fwrite( $fh, $carriageReturn );

    fwrite( $fh, $id );

    fclose( $fh );

   

    

    

?>

php: return data in json

In server side, the following code can return the data in JSON format to client(Apps).

<?php

     

    $name = "Ben";

    $id = "id1234";

    $method = "get data";

    

    // build result in json format

    $arr = array("result" => "success",

                 "uid" => $id,

                 "data"=>array("name"=>$name, 

                               "id"=>$id, 

                               "method"=>$method 

                               

                               )

                 );

    

    echo json_encode($arr);

    

    

?>

php: generates Token with random string

The following code generate the random string with certain length to the client. It can be used to create the token and send to client's apps.

<?php

    

    // generate random string

    function random_gen($length)

    {

        $random= "";

        srand((double)microtime()*1000000);

        $char_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

        $char_list .= "abcdefghijklmnopqrstuvwxyz";

        $char_list .= "1234567890";

        // Add the special characters to $char_list if needed

        

        for($i = 0; $i < $length; $i++)  

        {    

            $random .= substr($char_list,(rand()%(strlen($char_list))), 1);  

        }  

        return $random;

    } 

    

    $random_string = random_gen(30); //This will return a random 30 character string

    echo "New Token: ".$random_string;

    

   

?>