What does this plugin do?
[list]This Search & Replace Plug-in intends to search for a given strings into a displayed post's content and replace them with other strings. It's a common Search & Replace mechanism applied to all the displayed [url=http://b2evolution.net]b2evolution[/url] posts.[/list:u]
What b2evolution versions are supported?[list]The following implementation supports most b2evolution versions, including:[list]

Compatibility with the yet to be release 0.9.2 (Phoenix) release has not been tested (yet).[/list:u]
When should I use it?
[list]This plug-in has been developed to replace all the full URLs referencing an online blog to the local paths.

In my case, I wanted to replace all the occurrences of my online site URLs:

blog.lesperlesduchat.com/

to the local ones:

localhost/lesperlesduchat/

in my local development folder. In that way, I was able to click on my posts' links without leaving my local blog or displaying local images instead of requiring Internet connexion still active.

The same plug-in can also be used to fix misspelled words, fixing e-mail addresses (using obfuscated addresses for example) or anything else you want to replace to.[/list:u]
What are the plugin limitations?
[list]The current version does not support regular expressions in the search and replace strings. However, that might be added in a future version. Since regular expressions are slower to process than simple strings, it might be interesting to use the standard text when regular expressions are not required.

There is also a lack of user interface. The plug-in configuration is global to all blogs and has to be done in the plugin source code itself.[/list:u]
Implementation
[list]Create a _searchandreplace.renderer.php file into your plugins/renderers folder of your [url=http://b2evolution.net]install[/url] and copy-paste the following code:

<?php
/**
 * This file implements the Search & Replace Plug-in 0.1
 * intended for use with b2evolution 0.9.0.x and 0.9.1.
 *
 * This plug-in is intended to search and replace given text strings.
 *
 * Released under GNU GPL License - {@link http://www.gnu.org/copyleft/gpl.html}
 * @copyright (c)2005 by kwa - {http://blog.lesperlesduchat.com/dev.php}
 *
 * @package plugins
*/
if( !defined('DB_USER') ) die( 'Please, do not access this page directly.' );

/**
* Includes:
*/
require_once dirname(__FILE__).'/../renderer.class.php';

/**
* @package plugins
*/
class SearchAndReplace_RendererPlugin extends RendererPlugin
{
    var $code = 'b2eSnR';
    var $name = 'Search &amp; Replace 0.1';
    var $priority = 100;

    var $apply_when = 'stealth';
    var $apply_to_html = true;
    var $apply_to_xml = true;
    var $short_desc;
    var $long_desc;

    //>>> START of plugin-specific configuration variables ********************
    var $SearchAndReplace = array(
    	array( 'search' => 'your search string', 'your replacement string' => 'localhost/lesperlesduchat/' ),
	);
    //<<< END of plugin-specific configuration variables **********************


    /**
     * Constructor
     *
     * {@internal SearchAndReplace_Rendererplugin::SearchAndReplace_Rendererplugin(-)}
    */
    function SearchAndReplace_Rendererplugin()
    {
        $this->short_desc = T_( 'Search and replace strings into your posts.' );
        $this->long_desc = T_( 'This plug-in searches for strings in your posts and replaces it with other strings. This is a regular Search &amp; Replace feature applied to all your blogs' posts. (This plug-in is intended for b2evolution versions 0.9.0.x and 0.9.1.)' );
    }

    /**
     * Perform rendering
     *
     * {@internal SearchAndReplace_Rendererplugin::render(-)}
     *
     * @param string Content to render (by reference) / rendered content (IGNORED).
     * @param string Output format, see {@link format_to_output()} (IGNORED).
     * @
	 return boolean Always true.
    */
    function render( & $content, $format )
    {
		foreach( $this->SearchAndReplace as $SearchAndReplace )
		{
			$content = str_replace( $SearchAndReplace['search'], $SearchAndReplace['replace'], $content );
		}
        return true;
    }
}


// Register the plugin
$this->register( new SearchAndReplace_RendererPlugin() );

?>

[/list:u]
Configuration
[list]In the code above, edit the following lines:

    var $SearchAndReplace = array(
    	array( 'search' => 'your search string', 'replace' => 'your replacement string' => 'localhost/lesperlesduchat/' ),
	);

to all the search and replacement strings you want to. An example:

    var $SearchAndReplace = array(
    	array( 'search' => 'mail@isp.com',
                    'replace' =>
                           'mail@isp.com' ),
                           // HTML entities encoded/obfuscated mail in order to make mail grabbing more difficult for spammers
    	array( 'search' => 'corect', 'replace' => 'correct' ), // misspelled word
    	array( 'search' => 'WordPress rules', 'WordPress rules, but b2evolution rules more' ), // misspelled word
	);

Once saved, the plugin is automatically taken into account and applied to all the displayed posts.[/list:u]