How to get value from php variable in node.js

Question

I am working on a project attendance system and i want to access a variable that is declared in php file require.php in my node.js file custom.js how should i achieve that? so far i have created a connection with my sql server and hard-coded the value of

`var company_name="Aaqoo 2";`

and everything is working fine but i dont want to hard-code it i want to fetch the company_name stored in my php variable $sup_company_name which is declared in my require.php file so my question is how should i fetch the value from $sup_company_name in my js variable.....kindly help me then i will ask futher questions

this is my node js code

var express = require('express');
var mysql = require('mysql');
var app = express();

var connection = mysql.createConnection({
    host:'localhost',
    user:'root',
    password:'',
    database:'attendance'
});

connection.connect(function(error) {
    if (!!error) {
    console.log('Error in connection');
    } else {
    console.log('Connected');  
    }
});
var company_name = "Aaqoo 2"; //here i want the value from php variable $sup_company_name;

connection.query("Select * from employee_leaves where employee_leave_company_name=?", [company_name], function(error,rows,fields) {
    if (!!error) {
        console.log("Error in the query");
    } else {
        console.log("succesfully done\n");
        console.log(rows);
    }
});

app.listen(1337);

Have you tried this? var company_name= '<?php echo $sup_company_name; ?>' — Oluwafemi
– Oluwafemi, Commented Jul 31, 2016 at 13:45
@Oluwafemi but the issue is $sup_company_name is in require.php file and when i include the require php file using include("require.php"); node.js gives me error — Talha Sarwar
– Talha Sarwar, Commented Jul 31, 2016 at 13:47
PHP is executed before JavaScript. Include your PHP file via PHP first, then echo the variable value — Dacaspex
– Dacaspex, Commented Jul 31, 2016 at 13:51
@Oluwafemi SyntaxError: Unexpected token <? ?> at exports.runInThisContext (vm.js:53:16) at Module._compile (module.js:373:25) at Object.Module._extensions..js (module.js:416:10) at Module.load (module.js:343:32) at Function.Module._load (module.js:300:12) at Function.Module.runMain (module.js:441:10) at startup (node.js:139:18) at node.js:968:3 — Talha Sarwar
– Talha Sarwar, Commented Jul 31, 2016 at 13:51

Flo Cerquette · Accepted Answer · 2020-04-21 11:34:46Z

I did it, This is my example, only that i use this for my conection with pgsql.

code node js

var exec = require('child_process').exec;

exec(
    'php -r \'include("require.php"); echo $companyname."#@#".$hostname."#@#".$username."#@#".$database."#@#".$password;\'',

  function (err, stdout, stderr) {
    var [ companyname,hostname,username, database, password ] = stdout.split('#@#');
    const connectionData = {
      user: username,
      host: '',
      database: database,
      password: password,
      port: 5432,
    }
    const client = new Client(connectionData)

    client.connect()
    client.query('Select * from employee_leaves where employee_leave_company_name=?',companyname)
        .then(response => {
            //console.log(response.rows)
            client.end()
        })
        .catch(err => {
            client.end()
        })
  }
);

require.php


$companyname= 'namecompany'; 
$hostname = 'localhost';
$database = 'namedatabase';
$username = 'root';
$password = '123';

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