Include PHP inside JavaScript (.js) files

I have a JavaScript file (extension .js, not .html) containing several JavaScript functions.

I want to call one of the PHP functions in a PHP file containing only several PHP functions from within one of the JavaScript functions.

  • Is that possible?
  • Would I need to "include" the .php file containing the PHP function in the .js file?
  • How would I do that?
    For example, say I had a file called myLib.php containing a function called myFunc that takes two parameters (param1 and param2). Then I have a .js file containing a function called myJsFunc. How would a call the myFunc (PHP) from within the myJsFunc (JavaScript function)? Wouldn't I need to include the PHP file somehow in the .js file?



7 years later update: This is terrible advice. Please don't do this.

If you just need to pass variables from PHP to the javascript, you can have a tag in the php/html file using the javascript to begin with.

<script type="text/javascript">
    phpVars = new Array();
    <?php foreach($vars as $var) {
        echo 'phpVars.push("' . $var . '");';
<script type="text/javascript" src="yourScriptThatUsesPHPVars.js"></script>

If you're trying to call functions, then you can do this like this

<script type="text/javascript" src="YourFunctions.js"></script>
<script type="text/javascript">
    functionOne(<?php echo implode(', ', $arrayWithVars); ?>);
    functionTwo(<?php echo $moreVars; ?>, <?php echo $evenMoreVars; ?>);

PHP and JS are not compatible; you may not simply include a PHP function in JS. What you probably want to do is to issue an AJAX Request from JavaScript and send a JSON response using PHP.


A slightly modified version based on Blorgbeard one, for easily referenceable associative php arrays to javascript object literals:

PHP File (*.php)

First define an array with the values to be used into javascript files:

$phpToJsVars = [
  'value1' => 'foo1',
  'value2' => 'foo2'    

Now write the php array values into a javascript object literal:

<script type="text/javascript">
var phpVars = { 
  foreach ($phpToJsVars as $key => $value) {
    echo '  ' . $key . ': ' . '"' . $value . '",' . "\n";  

Javascript file (*.js)

Now we can access the javscript object literal from any other .js file with the notation:


This is somewhat tricky since PHP gets evaluated server-side and javascript gets evaluated client side.

I would call your PHP file using an AJAX call from inside javascript and then use JS to insert the returned HTML somewhere on your page.


You can't include server side PHP in your client side javascript, you will have to port it over to javascript. If you wish, you can use php.js, which ports all PHP functions over to javascript. You can also create a new php file that returns the results of calling your PHP function, and then call that file using AJAX to get the results.


Because the Javascript executes in the browser, on the client side, and PHP on the server side, what you need is AJAX - in essence, your script makes an HTTP request to a PHP script, passing any required parameters. The script calls your function, and outputs the result, which ultimately gets picked up by the Ajax call. Generally, you don't do this synchronously (waiting for the result) - the 'A' in AJAX stands for asynchronous!


You can make a double resolution of file: "filename.php.js" in this way. PHP generates JS in this file. I got all parameters from DB. This worked for me on xampp.

AddType application/x-httpd-php .js

AddHandler x-httpd-php5 .js

<FilesMatch "\.(js|php)$">
SetHandler application/x-httpd-php

Add the above code in .htaccess file and run php inside js files

DANGER: This will allow the client to potentially see the contents of your PHP files. Do not use this approach if your PHP contains any sensitive information (which it typically does).

If you MUST use PHP to generate your JavaScript files, then please use pure PHP to generate the entire JS file. You can do this by using a normal .PHP file in exactly the same way you would normally output html, the difference is setting the correct header using PHP's header function, so that the correct mime type is returned to the browser. The mime type for JS is typically "application/javascript"


Actually the best way to accomplish this is to write the javascript in a .php and use jquery in a separate file to use the Jquery get script file or jquery load use php include function in the doc where the javascript will live. Essentially this is how it will look.

Dynamic Javascript File in a .php file extension - Contains a mixture of php variables pre processed by the server and the javascript that needs these variables in scripts.

Static Js File - Using or

In the main html page call the static file as a regular js file. Calling the static js file will force load the dynamic data from the server.

some file.php 1:

$somevar = "Some Dynamic Data";

$('input').val(<?php echo $somevar?>);

or simply echo the script such as

echo "$('input').val(".$somevar.");";

File 2:somejsfile.js:

$("#result").load( "file.php" );

File 3 myhtml.html:

<script src="somejsfile.js"></script>

I believe this answer the question for many people looking to mix php and javascript. It would be nice to have that data process in the background then have the user have delays waiting for data. You could also bypass the second file and simply use php's include on the main html page, you would just have your javascript exposed on the main page. For performance that is up to you and how you want to handle all of that.


There is not any safe way to include php file into js.

One thing you can do as define your php file data as javascript global variable in php file. for example i have three variable which i want to use as js.


$abc = "Abc";
$number = 052;
$mydata = array("val1","val2","val3");
<script type="text/javascript">
var abc = '<?php echo $abc?>';
var number = '<?php echo $number ?>';
var mydata = <?php echo json_encode($mydata); ?>;

After use it directly in your js file wherever you want to use.


function test(){
   alert('Print php variable : '+ abc +', '+number); 

function printArrVar(){
  alert('print php array variable : '+ JSON.stringify(mydata)); 

Beside If you have any critical data which you don't want to show publicly then you can encrypt data with js. and also get original value of it's from js so no one can get it's original value. if they show into publicly.

this is the standard way you can call php script data into js file without including js into php code or php script into js.


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