Pass JavaScript var to php function [duplicate]

Question

This question already has answers here:

How to get JavaScript function data into a PHP variable (5 answers)

how to pass the JavaScript variable to the php function [duplicate] (6 answers)

Closed 12 years ago.

I have JavaScript function with pass one parameter to

<script type="text/javascript">
function myfun(var1)
{
 var returnVal = "<?php echo get_value(); ?>";
}
</script>

I want to pass JavaScript variable i.e. var1 to get_value();

• zzlalani: and why you want to do this?
• user2864740: PHP runs on the server. First. It generates HTML/JavaScript which is run on the client. Later. To pass data back to PHP you need to send it to the server (form post, AJAX, SignalR, etc).
• jfmbrennan: stackoverflow.com/questions/1917576/…
• Just code: I get you @user2864740 my mistake
• Krish R: You need to use Ajax to pass javascript value into PHP.

Answer 1

You can't do that.

PHP is executed server-side, Javascript client-side. What that means is, the PHP code is executed before the Javascript.

However, you could use AJAX to call a PHP function from Javascript.

You can refer : how to pass the JavaScript variable to the php function

How to pass JavaScript variables to PHP?

Answer 2

Try this:

PHP is executed server-side.
Javascript client-side. 
It means, the PHP code is executed before the Javascript.
Here what you can do is to use jquery-ajax.
Inside that call a URL which returns variable you want.
Use that in result of ajax.

• Thanks