JavaScript Get MySQL data with IONIC mysql data with type,mysql data at rest encryption,mysql

I'm trying to get some data from a MySQL table for the first time.

I'm using ionic , PHP and AngularJS to try it but my query doesn't return anything. As I'm devloping it for my first time, I'm following this tutorial to get data from bd. Although, when I run my code, my file just returns me the content of another file besides of a json file with all the content I want.

Basically I have a function inside my app controller and I'm calling it(for testing) in a button. This functions makes an $http request via Angular to another file with my query. This file that contains the query calls another one to open the database connection e returns the data via Json.

But I just have the first file opened as a return from that process. Can anybody helps me ?

app.js

// Ionic Starter App

// angular.module is a global place for creating, registering and 
retrieving Angular modules

// 'starter' is the name of this angular module example (also set in a 
<body> attribute in index.html)

// the 2nd parameter is an array of 'requires'

var secompApp = angular.module('starter', ['ionic', 'ngCordova'])

.run(function($ionicPlatform) {

$ionicPlatform.ready(function() {
// Hide the accessory bar by default (remove this to show the accessory 
bar above the keyboard
// for form inputs)
if(window.cordova && window.cordova.plugins.Keyboard) {
  cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
}
if(window.StatusBar) {
  StatusBar.styleDefault();
}

 });

})


secompApp.controller("SeCompController", function($scope, 
$cordovaBarcodeScanner, $http){


$scope.scanBarcode = function(){

$cordovaBarcodeScanner.scan().then(function(imageData){
  //imageData = barcode content
  //TRANSFORMAR ALERT POR FUNÇÃO QUE ENVIA imageData(DADO LIDO) PARA O BD
  alert(imageData.text);
  console.log("format: " + imageData.format);

}, function(error){
  console.log("Ocorreu um erro, tente novamente. Erro:" + error);
});


}

$scope.getMinicursos = function(){
$http.get("ajax/getMinicursos.php").success(function(data){
  $scope.minicursos = data;
  alert(data);
});

  }

});

getMinicursos().php

<?php
require_once '../includes/config.php'; // The mysql database connection script
if(isset($_GET['name'])){
$task = $_GET['name'];
$status = "0";
$created = time();

$query="SELECT * from course";
$result = $mysqli->query($query) or die($mysqli->error.__LINE__);

$result = $mysqli->affected_rows;

echo $json_response = json_encode($result);
}

?>

config.php

<?php
$servername = "localhost";
$username = "abc";
$password = "123";

try {
    $conn = new PDO("mysql:host=$servername;dbname=test", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }
?> 
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