From mediawiki.org
MediaWiki extensions manual
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Release status: unmaintained
Implementation Tag
Description Supports replacing "red links" to Wikipedia for wikification in other projects
Author(s) X-romix
Latest version 1.1 (2010-05-13)
MediaWiki 1.15+
Database changes No
License Creative Commons Attribution/Share-Alike License 3.0 and GFDL
Download See the code section
Example http://wikiext.org/index.php/Red_links_sample
‎<ReplaceRedLinks />
Tested on MediaWiki 1.15.3

The ReplaceRedLinks extension supports replacing "red links" to Wikipedia for simple wikification in other projects.


Use tag ‎<ReplaceRedLinks /> to switch extension on. If in page there is not tag ‎<ReplaceRedLinks />, extension does not anything.

Language parameter

Use parameter lang e.g. <ReplaceRedLinks lang="en"/> to switch Wikipedia language. There is need a two-letter language identifier, e.g. "ru", "fr" etc. If there is no this parameter or if it incorrect - system uses "en" for default.

Exclusions parameter

Use parameter exclusions e.g. <ReplaceRedLinks lang="en" exclusions="apple|orange"/> to switch off processing for any article names. Delimitier - is vertical pipe "|".



  • Copy the code into a file and place the file(s) in a directory called ReplaceRedLinks in your extensions/ folder.
  • Add the following code at the bottom of your "LocalSettings.php " file:
    require_once "$IP/extensions/ReplaceRedLinks/ReplaceRedLinks.php";
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.



Create this file in ANSI encoding (do not add any spaces before starting "<?php" and after end "?>").

//Extension supports replacing "red links" to Wikipedia for wikification in other projects.
if ( ! defined( 'MEDIAWIKI' ) )	die();
	$wgHooks['ParserFirstCallInit'][] = 'wfReplaceRedLinks';
} else {
	$wgExtensionFunctions[] = 'wfReplaceRedLinks';
// Extension credits that will show up on the page [[Special:Version]]    
$wgExtensionCredits['parserhook'][] = array(
       'path'         => __FILE__,
	'name'         => 'ReplaceRedLinks',
	'version'      => '1.1',
	'author'       => 'X-romix', 
	'url'          => 'https://www.mediawiki.org/wiki/Extension:ReplaceRedLinks',
	'description'  => 'Allows replacing "red links" to Wikipedia for wikification in other projects'
class ReplaceRedLinks{
	var $SwitchOff = true;
	var $lang = "en";
	var $exclusions=array();
	function ReplaceRedLinks() { //Constructor
	function setHooks() {
		global $wgParser, $wgHooks;
		//Hook for tag <ReplaceRedLinks> 
		//see http://www.mediawiki.org/wiki/Manual:Tag_extensions for details
		$wgParser->setHook( 'ReplaceRedLinks' , array( &$this, 'fnReplaceRedLinks' ) );
		//function fnReplaceRedLinks) - is below
		//Hook to ParserBeforeTidy event - "Used to process the nearly-rendered html code for the page (but before any html tidying occurs)"
		//see also http://www.mediawiki.org/wiki/Manual:Hooks/ParserBeforeTidy
		$wgHooks['ParserBeforeTidy'][] = array( &$this, 'fnParserBeforeTidy' );
		//function fnParserBeforeTidy() - is below
	function fnReplaceRedLinks( $str, $argv, $parser ){
		//tag <ReplaceRedLinks/> found
		$this->SwitchOff = false;
		//parameter "lang"
			if (preg_match("/[a-z][a-z]/i", $s)) {
				$this->lang = $s;
				//unproper language - needed 2 letters - ru, en etc.

		//parameter "exclusions"
			$arr = explode("|", $s);
		foreach($arr as $el){

		return $parser->recursiveTagParse($str);
	function fnParserBeforeTidy(&$parser, &$text){
		global $IP;
		if($this->SwitchOff == true){
			return true;

		//process links
			(\"\/index\.php\?title\=)	# start of link
			([^\&]+) 					# any text before &
			(\&amp\;action\=edit)		# action=edit
			(\&amp\;redlink\=1\")		# redlink=1
			(\sclass\=\"new\")			# class=new
			(\stitle\=\"[^\"]*\")		# title=
			array( __CLASS__, 'ParseRedLinkCallback' ), 
		$this->SwitchOff = true; //to prevent drawing it in footer
		return true;
	function ParseRedLinkCallback($matches){
		$tt=str_replace("_", " ", $tt); 
		if (in_array(strtolower($tt), $this->exclusions)){
			//there is exclusion
			//do not modify anything
			return $matches[0];

		return '"http://'.$this->lang.'.wikipedia.org/wiki/'.$s.'" title="'.$tt.' (Wikipedia)"';
function wfReplaceRedLinks() {
	new ReplaceRedLinks;
	return true;