How to get JavaScript function data into a PHP variable

Question

I am using PHP and JavaScript. My JavaScript code contains a function, get_data():

function get_Data(){
 var name;
 var job;
 .....
 return buffer;
}

Now I have PHP code with the following.

<?php
 $i=0;
 $buffer_data;
 /* Here I need to get the value from JavaScript get_data() of buffer;
 and assign to variable $buffer_data. */
?>

How do I assign the JavaScript function data into the PHP variable?

• SUN Jiangong: I have the same problem as you. Have you solved it ?
• Yusha: Such a GREAT question ,seriously! Thanks for posting

Answer 1

Use jQuery to send a JavaScript variable to your PHP file:

$url = 'path/to/phpFile.php';
$.get($url, {name: get_name(), job: get_job()});

In your PHP code, get your variables from $_GET['name'] and $_GET['job'] like this:

<?php
 $buffer_data['name'] = $_GET['name'];
 $buffer_data['job'] = $_GET['job'];
?>

• Uzbekjon: @garcon1986, Yes, $.get() is using ajax!
• Kenny Johnson: I'm trying to do this to pass Javascript variables to a new window. Would the PHP code need to be in the new window or in the parent window? I can't get it to work either way.

Answer 2

JavaScript code is executed clientside while PHP is executed serverside, so you'll have to send the JavaScript values to the server. This could possibly be tucked in $_POST or through Ajax.

Answer 3

If you don't have experience with or need Ajax, then just stuff your data into a post/get, and send the data back to your page.

Answer 4

You would have to use Ajax as a client-side script cannot be invoked by server-side code with the results available on server side scope. You could have to make an Ajax call on the client side which will set the PHP variable.

Answer 5

 <script>
 function get_Data(){
 var name;
 var job;
 .....
 return buffer;
 }
 function getData()
 {
 var agree=confirm("get data?");
 if (agree)
 {
 document.getElementById('javascriptOutPut').value = get_Data();
 return true;
 }
 else
 {
 return false;
 }
 }
 </script>
 <form method="post" action="" onsubmit="return getData()"/>
 <input type="submit" name="save" />
 <input type="hidden" name="javascriptOutPut" id="javascriptOutPut"/>
 </form>
 <?php
 if(isset($_POST['save']))
 {
 var_dump($_POST['javascriptOutPut']);
 }
 ?>