Event handling in

Mary Whitley — Wed, 05 Nov 2014 10:14:37 +0000

Event handling in PHP
====================
PHP supports Event handling mechanism, it supports different type of Events like Get, Put, Post etc...
Ex.

<?php
class Handler {
   function onGET() {
      echo "onGET";
   }
   function onPOST() {
      echo "onPOST";
   }
   function onPUT() {
      echo "onPUT";
   }
   function onDELETE() {
      echo "onDELETE";
   }
}
?>

Event Handling In Javascript
============================
There is also some other events link mouseover, mousein, mouseout that is suppored by javascripts. we can use this events in our form.

PHP is a server side

Greg K — Wed, 10 Sep 2014 07:27:00 +0000

PHP is a server side language, which means all execution is done on the server based (most of the time) upon individual requests from a browser.

in order for it to act upon something you do in the browser (other than responding to you calling a script with options POST/GET data), you need to also include a client-side language, such as Javascript.

Javascript can detect the user interaction, and then make calls to a script on a server usually via AJAX. PHP would process that script and output some type of information that the javascript can work with (such as JSON formatted data).

A big thing to remember is that unlike a standard standalone application, when you make a call to PHP, the script runs and then stops. Each interaction starts a fresh new call to scripts, so you need some method (usually $_SESSION) to keep track of a user's activity between each time a script is called.