Can't parse json from php into javascript

Question

Just started learning JS and, I'm using W3schools to learn, so i get to the JSON PHP section and it comes this example:

JS Code

      const xmlhttp = new XMLHttpRequest();
      
      xmlhttp.onload = function() {
        const myObj = JSON.parse(this.responseText);
        document.getElementById("demo").innerHTML = myObj.name;
      }
      xmlhttp.open("GET", "/php/demo_file.php");
      xmlhttp.send();

demo_file.php

<?php
$myObj = new stdClass();
$myObj->name = "John";
$myObj->age = 30;
$myObj->city = "New York";

$myJSON = json_encode($myObj);

echo $myJSON;
?>

I get this error:

Error

Like I said, I'm just learning and this seems like a trivial problem, the demo is working on the w3schools website but not working on my editor.

Check the PHP file first in your browser, to see if it does indeed return JSON. — KIKO Software
– KIKO Software, Commented Nov 26, 2022 at 18:23

FarrisFahad · Accepted Answer · 2022-11-26 18:42:57Z

1

You need to run php on a local server. PHP cannot be run anywhere on your document. You need to install xampp or apache.

answered Nov 26, 2022 at 18:42

FarrisFahad

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2 Comments

KIKO Software Over a year ago

I think you have the right idea, but you're not expressing it very well. "PHP cannot be run anywhere on your document.", don't you mean: "A PHP script does not execute in the browser, like Javascript, it needs a webserver with a PHP interpreter. Running a PHP script directly from your computer will not work.".

FarrisFahad Over a year ago

@KIKOSoftware you are right. English is not my first language. I try to do my best. Your choice of words is better.

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