CODEWITHSUNDEEP
phpjavascript
kusanagi
kusanagi

Reputation: 14624

php run javascript code

is it possible to run some javascript expression? for example echo eval("Math.sqrt('25')");

Upvotes: 5

Views: 20337

Answers (8)

Alibehtm
Alibehtm

Reputation: 43

if you have node installed on your server then you can exec this command with php

node a.js

and then use the console.log as output.

Upvotes: 0

Chenos
Chenos

Reputation: 1

Run JavaScript code from PHP

php v8js: https://github.com/phpv8/v8js

$v8 = new V8Js;
$v8->executeString("Math.sqrt('25')"); // 5

https://github.com/chenos/execjs

use Chenos\ExecJs\Context;

$cxt = new Context;
$cxt->eval("Math.sqrt('25')"); // 5

Upvotes: 0

Pascal MARTIN
Pascal MARTIN

Reputation: 401182

In normal situations :

  • PHP runs on the server
  • and, then, Javascript is run on the client, in the browser.

So, no, it's not quite possible to have PHP execute some Javascript code on the server.


But there is at least on PHP extension that embed (or wrap arround) a Javascript engine, and, as a consequence, allows one to execute Javascript on the server, from PHP.

The extension I'm thinking about is the spidermonkey one : installing and enabling it on your server will allow you to execute Javascript code, on the server, from PHP.

Of course, like any other PHP extension, you'll need to be admin of your server, in order to install it -- and this one is never installed by default, as it answers a very specific need.


About this extension, I have never seen it used in real situations, and there are not many people who tried it... here are two articles you might want to read :

Upvotes: 7

jugn
jugn

Reputation: 41

put your php into a hidden div and than call it with javascript

html / php part

<div id="mybox" style="visibility:hidden;"> echo sqrt(25); </div>

javascript part

var myfield = document.getElementById("mybox");
myfield.visibility = 'visible';

now, you can do anything with myfield... like this

alert(myfield);

Upvotes: 3

Dvir Berebi
Dvir Berebi

Reputation: 1566

There is also the J4P5

I don't know if it's still maintained but you can always fork it, it's released under the GPL license.

Upvotes: 3

horatio
horatio

Reputation: 1436

echo sqrt(25);

See:

http://php.net/manual/en/function.sqrt.php

Upvotes: 1

esdot
esdot

Reputation: 578

Since PHP is a server-side scripting language that runs on the server and Javascript is a client-side scripting language that runs in a browser you would have to have the PHP generate Javascript code (the same way it generates HTML) that gets executed after the page is loaded.

Upvotes: 1

yogsma
yogsma

Reputation: 10594

Try this 

echo "<script language='javascript'> Math.sqrt('25') </script>"

Upvotes: 5

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