Joomla Hello World plugin tutorial

Tue, 27 Sep 2011 16:57:50 GMT

This is a tutorial for creating very simple content-plugin "Hello World" for Joomla 1.5 native.

1. Create a folder plg_helloworld on your local computer.

2. Create two text files encoded in UTF-8 in it, and name it helloworld.xml and helloworld.php

3. Example of code for file helloworld.xml is here:

4. Example of code for helloworld.php file:

defined( '_JEXEC' ) or die( 'Restricted access' );
// import library dependencies
jimport('joomla.event.plugin');
class plgContentHelloworld extends JPlugin
{
    //constructor
    function plgContentHelloworld( &$subject )
    {
        parent::__construct( $subject );
    }

    function onPrepareContent( &$row, &$params, $limitstart=0 )
    {
        //plugin codes here
        if (preg_match("#{helloworld}#s", $row->text)) {

            $helloworldCode = 'Hello world!';
            $row->text = preg_replace("#{helloworld}#s", $helloworldCode, $row->text);
        }
        //no return value
    }
}
?>

5. Zip folder plg_helloworld, load and instal it on Joomla 1.5 as usual. Enable plugin "Content - Hello World" in Joomla.

6.Write {helloworld} somewhere in article and you look text "Hello world!" in this place. That's all :)

You can download source code by this link: plg_helloworld.zip

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Joomla Hello World plugin tutorial