Pass Javascript parameter to PHP

Question

I want to pass 2 (two) parameters from my javascript page to a PHP page. I’ve searched the net, and only find this logic when PHP is on the same javascript page.

Does anyone know if this is possible? and how to do?

Answer 1

Is not possible, unless you are trying to requisition HTTP (ajax, forms, etc).

This is why Javascript runs client side (browser) while PHP runs server side (server) and the only path to JavaScript (client) up to the PHP (server) is through request HTTP.

Example - Ajax:

ajax.html

$.ajax({
  type: "POST",
  url: "algum.php",
  data: { meuParametro1: "valor 1", meuParametro2: "valor 2"},
  complete: function(data){
            // (...)
        }
});

Example - Form:

formulario.html

<form action="algum.php" method="post">
    <<input type="text" name="meuParametro1" value="valor 1">
    <<input type="text" name="meuParametro2" value="valor 2">

    <<input type="button" name="btEnviar" value="Enviar">
</form>

algum.php

$parametro1 = $_POST['meuParametro1'];
$parametro2 = $_POST['meuParametro2'];

Answer 2

You can add as many variables as you like. Exp:

data: { parametro: "valor", prametro2: "valor", parametro3: "valor"}

Or go from PHP like this:

var valor1= '<?php echo "valor"; ?>'
var valor2 = '<?php echo "valor"; ?>'

data: { parametro: valor1, parametro2: valor2}

Answer 3

Use ajax:

$.ajax({
      type: "POST",
      data: {variavel: 'valor'} ,
      url: "arquivo.php",
      success: function(resposta){
          alert(resposta);
      }  
    }); 

That way you give a Javascript PHP pro POST.