How to send php variable into angularjs function (different files) - php

Question

I have a variable in php file reg.php. I want to send that variable into .js file in different place (app.reg.js). I tried a lot of solutions but they didn't work. I have to admit that I'm a new programmist, and this is my first own project in angularjs.
How my app exactly works :
In index.html i use routing to get to register.html (this working well).
register.html has a form app.reg.js sending it into reg.php
App.reg.js :
http://www.chopapp.com/#kpwad4zs (i'm getting ALL THE TIME "your post is not properly formatted as code -.-).
reg.php (it works fine! Just need variable $loginExist from it :
http://www.chopapp.com/#yvqivk5m
I would like to send variable from reg.php to the app.reg.js file. How to do this? I think i tried all of the solutions from here but non of them worked...

Answer 1

php file
session_start();
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$login = $request->login;
$password = $request->password;
require_once "connect.php";
mysqli_report(MYSQLI_REPORT_STRICT);
try {
$connect = new mysqli($host,$db_user,$db_password,$db_name);
if($connect->connect_errno!=0)
{
throw new Exception(mysqli_connect_errno());
} else {
//Does login exist?
$result = $connect->query("SELECT id FROM `users` WHERE login = '" . mysql_real_escape_string($login) . "'");
$login_count = $result->num_rows;
if($login_count>0) {
$loginExist = true;
}
else {
$loginExist = false;
$password = $login . $password;
$password = password_hash($password, PASSWORD_DEFAULT);
//$sql = "INSERT INTO users (login, password) VALUES ('$login','$password')";
$sql = "INSERT INTO users (login, password)VALUES('" . mysql_real_escape_string($login) . "', '" . mysql_real_escape_string($password) . "')";
if($connect->query($sql) === TRUE) {
echo "ok!";
} else {
echo "Error: " . $sql . "<br>" . $connect->error;
}
}
$connect->close();
}
} catch(Exception $e) {
echo 'Server error!';
}
echo json_encode(['res' => $loginExist]);
?>
js file
app.controller('regCtrl', function ($scope, $window, $http) {
$scope.send = function () {
var form = {
password: scopeToPasswordImput,
login: scopteToLoginImput
};
$http({
url:'reg1.php',
method: "POST",
data: form
}).then(function (response) {
if (response) {
//I Want to use php variable in this section
//$window.alert("");
console.log(response.data.res);
} else {
console.log("Network response was not ok.");
window.location.href = '/';
}
})
};
});