How to assign a php variable inside echoed js code?

Question

I have js code which is inside echo statement (which is retried using ajax call). I need to send another ajax request based on the first result. So I need to assign a php variable inside a js variable (php variable is retrieved from database during first ajax call)

echo '<script>
 echo '<script>// SEINDINGM REQUEST FOR SELECTED DAY 
$("#dayName").on("change", function(){
// GRABBING THE SELECTED VALUE

var day = $(this).val();
var uid=//Here I want to assign the php variable //;
alert(uid);
alert(day);
</script>';

It's not same as the other question.. Please see that this one inside an echo statement which is causing problems. — Hkm Sadek Hossain, Sep 24 '16 at 22:28

Michael Troger · Accepted Answer · 2016-09-24T22:27:18.877

2

replace

var uid=//Here I want to assign the php variable //;

with

var uid='.$myVariable.';

PHP doesn't care if this value will end up in JavaScript code. It just writes the content wherever you want it to be. The document will arrive at the client as usual HTML including the already inserted variable content. Then it will be normally executed by JavaScript.

If the variable's content is a String then you have to write it like:

var uid="'.$myVariable.'";

Here are more information and different options how to include variable content within echo php - insert a variable in an echo string

edited Sep 24 '16 at 22:27

answered Sep 24 '16 at 22:04

Michael Troger

3,336
2
25
41

Didn't work for me. I got this error " Uncaught SyntaxError: Unexpected token <" – Hkm Sadek Hossain Sep 24 '16 at 22:14
var uid=""; This line assigning the complete php code not the variable ... – Hkm Sadek Hossain Sep 24 '16 at 22:16
1

I'll update my answer, I know the problem. Give me a second – Michael Troger Sep 24 '16 at 22:17
You can try it again – Michael Troger Sep 24 '16 at 22:20

score 1 · Answer 2 · answered Sep 24 '16 at 22:17

1

echo '<script>
$("#dayName").on("change", function(){
// GRABBING THE SELECTED VALUE

var day = $(this).val();
var uid='.$myVariable.'
alert(uid);
alert(day);
</script>';

answered Sep 24 '16 at 22:17

jakub wrona

2,212
17
17

Thanks.... Your answer worked too.. – Hkm Sadek Hossain Sep 24 '16 at 22:32

How to assign a php variable inside echoed js code?

2 Answers2