Discover the world with our lifehacks

How to pass JavaScript value to PHP?

How to pass JavaScript value to PHP?

The way to pass a JavaScript variable to PHP is through a request. This type of URL is only visible if we use the GET action, the POST action hides the information in the URL. Server Side(PHP): On the server side PHP page, we request for the data submitted by the form and display the result. $result = $_GET [ ‘data’ ];

How to use JavaScript variable in PHP?

It worked for me well:

  1. Create a hidden form on a HTML page.
  2. Create a Textbox or Textarea in that hidden form.
  3. After all of your code written in the script, store the final value of your variable in that textbox.
  4. Use $_REQUEST[‘textbox name’] line in your PHP to gain access to value of your JavaScript variable.

How to set JavaScript variable value in PHP variable?

Try using ajax with jQuery. post() if you want a more dynamic assignment of variables….I guess you can use cookies for it.

  1. First add a cookie jquery plugin.
  2. Then store that window width in a cookie variable.
  3. Access your cookie in PHP like $_COOKIE[‘variable name’].

Can I use JavaScript and PHP together?

PHP Vs JavaScript Integration with External code You can combine PHP code only with HTML Code. On the other hand, JavaScript code can be combined with the latest technologies like HTML, XML, and Ajax.

Can I put JavaScript in PHP?

You can execute Javascript through PHP by calling javascript code/function as a string in PHP and send it to the client browser to execute.

HOW include JavaScript code in PHP file?

The easiest solution would be to put the script block after the form. Another solution would be to capture the window. onload event or use the jQuery library (overkill if you only have this one JavaScript).

How does JavaScript interact with PHP?

Answer : PHP and Javascript cannot directly interact since PHP is a server side language and Javascript is a client-side language. However, we can exchange variables since PHP can generate Javascript code to be executed by the browser and it is possible to pass specific variables back to PHP via the URL.

Can I write PHP inside JavaScript?

Simply placing the PHP code inside JavaScript will not work in this case either. The reason you can’t simply call a PHP function from JavaScript has to do with the order in which these languages are run. PHP is a server-side language, and JavaScript is primarily a client-side language.

How does AJAX work in JavaScript?

AJAX = Asynchronous JavaScript and XML. AJAX is a technique for creating fast and dynamic web pages. AJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page.

How use external js file in PHP?


  1. JavaScript with json call working in head but not if in separate .js file.
  2. Change CSS value by using PHP.
  3. Most efficient way to pass PHP variables to external JavaScript (or jQuery) file.
  4. Placing javascript/jquery functions in a universally accessible page.
  5. -2. PHP DOM on Javascript.
  6. -6.

How do I get data from JavaScript to PHP?

If you want to get data from JavaScript to PHP then you need to make a new HTTP request and run a new (or the same) PHP script. You can make an HTTP request from JavaScript by using a form or Ajax. These are two different languages, that run at different time – you cannot interact with them like that.

How do I use a JavaScript variable in a PHP script?

If you want to use a js variable in a php script you MUST pass it within a HTTP request. There are basically two ways: Submitting or reloading the page (as per Chris answer). Using AJAX, which is made exactly for communicating between a web page (js) and the server(php) without reloading/changing the page.

How to get JavaScript variable value on the same page?

You will need to use JS to send the URL back with a variable in it such as: Add a cookie with the javascript variable you want to access. Here is the Working example: Get javascript variable value on the same page. You might want to start by learning what Javascript and php are.

Why JS variables are not being set in PHP?

When php is processing this file (server side), the js variable is not set yet. Js variables are set client side, when php has already run and can’t interact anymore, unless you do another http request (for example with ajax).