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I want to call a JavaScript function through PHP and store the returned value in a PHP variable. How to do this?

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  • What function? What exactly are you doing? This is possible, but there may be a better way since JavaScript is client-side and PHP is server-side. Commented Oct 31, 2009 at 6:09
  • If you post what you're trying to do, we can help you find a solution. Commented Oct 31, 2009 at 6:15
  • exact duplicate of stackoverflow.com/questions/419240/… etc. Commented Oct 31, 2009 at 7:08

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You can't do that - javascript being a client side technology will execute after your PHP script has already finished so there's no way to do what you are looking to accomplish.

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you can do that - for an example, see stackoverflow.com/questions/419240/…
technically you're not calling a javascript function from PHP, you're just using AJAX to get a PHP page - so it's going javascript -> PHP not PHP -> javascript

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