How to pass PHP array to NodeJS HTTP server?

Question

So I have a PHP file called "dbEmails.php", it basically writes all existing emails from MySQL to an array:

<?php
require_once __DIR__ . '../db.php';

$sth = $dbh->query('SELECT email FROM users');

while($row = $sth->fetch(PDO::FETCH_ASSOC)){
    $emails[] = $row['email'];
}

echo json_encode(array($emails));

I have a NodeJS HTTP server that is used for validating whether email is already registered or not, while in registration page. Here it is:

var http        = require('http');
var querystring = require('querystring');

//var emails = array called "emails" from "dbEmails.php"

function accountExists (email) {
  return emails.indexOf(email) > -1;
}

var server = http.createServer(function(req, res) {
  var params = req.url.split('?')[1];
  var data   = querystring.parse(params);
  var email  = data.email;

  res.statusCode = 200;
  res.setHeader("Content-Type", "application/json");
  res.setHeader("Access-Control-Allow-Origin", "*");
  res.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");

  if (accountExists(email)) {
    res.write('""');
  } else {
    res.write('"true"');
  }

  res.end();
});
server.listen(6666);

As you can see in the code I have already commented what exactly my question is. I need to get $emails array from PHP into var emails of JS.

I searched some but couldn't find a solution. I think I'm not supposed to use AJAX, I don't know much of anything about Node at all.

What would be the best way of going about this?

Question 2:

Will var emails update automatically when there is new email entry in my database? I guess not. If it doesn't update then can someone please tell me how I should go about keeping my var emails up to date?

You should be able to find several examples how to use curl to send data to an http server, for example [1](http://stackoverflow.com/a/9065892/5781248) [2](http://stackoverflow.com/questions/2138527/php-curl-http-post-sample-code) — J.J. Hakala, Jul 01 '16 at 14:02

score 0 · Accepted Answer · answered Jul 02 '16 at 16:10

From question 1,

please update your nodejs app using express.js, good tutorial >> https://scotch.io/tutorials/use-expressjs-to-get-url-and-post-parameters
your node app should accept post method
you can call node from php using curl command and pass email data to it and get result whether success or not

From question 2,

if you update yiue node app from my suggestion above, it should be updated automatically

How to pass PHP array to NodeJS HTTP server?

1 Answers1