Creating Wordpress Plugin

Step 1 : \wp-content\plugins

Step 2 : create a folder "myplugin"

Step 3 : create a php file "my_plugin.php"

Step 4 : add following code into the file

<code>

<?php

/*

Plugin Name: Hi Plugin

Plugin URI: http://www.example.com

Description: This test Plugin Created by me.

Author: RK

Version: 1.0

Author URI: http://www.example2.com

*/

//add_action('admin_notices','hello_world'); // display notice bar on the admin panel

header('content-type: text/plain'); 

//add_filter('admin_head','hello_world');

add_filter('the_content','hello_world');

add_action('init','hello_add_js_to_doc_head'); // function initialize the javaScript.

//add_action('get_header','hello_world');

//add_action('admin_footer','hello_world'); // display content on footer

// function to include external js file

function hello_add_js_to_doc_head(){

$src=plugins_url('hello.js',__FILE__); // locate the file path

wp_register_script('hello',$src); // include the file

wp_enqueue_script('hello'); // execute the js file for onload initialization.

}

// function display content and a twitter link -- $input means actual posted content

function hello_world($input){

$chos = hello_get_me();

return $input."<p id='me'> $chos</p>";

}

// function to display a label on the content as Follow me on Twitter.

function hello_get_me(){

?>

<a href="http://www.example.com" target="_blank" onclick="myalertbx()">Follow Me Twitter</a>

<?php

}

?>

</code>

Step 5 : create an another file "hello.js"

Step 6 : add following code into the file

<code>

(function() {

var s = document.createElement('SCRIPT'), s1 = document.

getElementsByTagName('SCRIPT')[0];

s.type = 'text/javascript';

s.async = true;

s.src = 'http://widgets.digg.com/buttons.js';

s1.parentNode.insertBefore(s, s1);

//alert("hi there");

})();

function myalertbx(){

alert("Hello you Clickme : Go to my Twitter Page");

}

</code>

Step 7 : Execute in wordpress plugin menu

Step 8 : Active the plugin

Step 9 : Enjoy 

by Ravi Arsid.