Simple Plugin in WordPress

Following is a simple example of word press development plugin. Any further query comment it.
...........
<?php

Plugin Name : Simple plugin
Plugin URI : http://www.wordpress.org/
Description : Simple plugin  WordPress Plugin Example
Author :  Ikhlaque
Version : 0.01
Author URI : http://www.webin2.com/

function hello($content){
 print $content . "Hello Ikhlaque";
}

add_filter('the_content','hello');

............


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