Calling PHP Function within Javascript

Question

I want to know is it possible to call a php function within javascript, only and only when a condition is true. For example

Answer 1

The PHP function cannot be called in the way that you have illustrated above. However you can call a PHP script using AJAX, code is as shown below. Also you can find a simple example here. Let me know if you need further clarification

Using Jquery

Barebones Javascript Alternative