googleSearch.php

<?php
/*
Extension to add a google search box
Usage:
{{#googleCoop:}}
*/
$wgExtensionFunctions[] = 'wfGoogleCoop';
$wgHooks['LanguageGetMagic'][]  = 'wfGoogleCoop_Magic';

function wfGoogleCoop() {
	global $wgParser;
	$wgParser->setFunctionHook( "googleCoop", "renderSearchBox" );
}

function wfGoogleCoop_Magic( &$magicWords, $langCode ) {
		$magicWords['googleCoop'] = [ 0, 'googleCoop' ];
		return true;
}

# The callback function for converting the input text to HTML output
function renderSearchBox( &$parser ) {
		$parser->disableCache();
		$output = <<<SEARCH
<div id="googleSearch">
<form id="searchbox_cref" action="http://www.wikipathways.org/index.php/WikiPathways:GoogleSearch">
<table width="190" frame="void" border="0">
<tr>
<td align="center" bgcolor="#eeeeee" border="1">
<input type="hidden" name="cref" value="http://www.wikipathways.org/wp_cse_context.xml" />
<input type="hidden" value="011541552088579423722:rset6ep3k64" name="cx">
<input type="hidden" name="cof" value="FORID:11" />
<input type="hidden" name="filter" value="0" /> <!--set filter=0 to disable omitting similiar hits-->
<input name="q" type="text" size="20%" />
<tr><td valign="top" align="center" border="0"><input type="submit" name="sa" value="Search" />
</tr>
</table></form><script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=searchbox_cref"></script>
SEARCH;

		return [ $output, 'isHTML' => 1, 'noparse' => 1 ];
}

# Google Custom Search Engine Extension
#
# Tag :
#   <Googlecoop></Googlecoop>
# Ex :
#   Add this tag to the wiki page you configed at your google co-op control panel.
#
#
# Enjoy !

$wgExtensionFunctions[] = 'GoogleCoop';
$wgExtensionCredits['parserhook'][] = [
		'name' => 'Google Co-op Extension',
		'description' => 'Using Google Co-op',
		'author' => 'Liang Chen The BiGreat',
		'url' => 'http://liang-chen.com'
];

function GoogleCoop() {
		global $wgParser;
		$wgParser->setHook( 'Googlecoop', 'renderGoogleCoop' );
}

# The callback function for converting the input text to HTML output
function renderGoogleCoop( $input ) {
		$output = '<!-- Google Search Result Snippet Begins -->
  <div id="results_cref"></div>
  <script type="text/javascript">
    var googleSearchIframeName = "results_cref";
    var googleSearchFormName = "searchbox_cref";
    var googleSearchFrameWidth = 600;
    var googleSearchFrameborder = 0;
    var googleSearchDomain = "www.google.com";
    var googleSearchPath = "/cse";
    var googleSearchResizeIframe = false; //fixes back button issue in firefox
  </script>
  <script type="text/javascript" src="http://www.google.com/afsonline/show_afs_search.js"></script>

<script type="text/javascript">
  var googleSearchFrame = document.getElementsByName("googleSearchFrame");
  if (googleSearchFrame[0]) {
      // Firefox, Opera, ...
      googleSearchFrame[0].style.height = "60em";
  } else {
      // IE - which has a misbehaving getElementsByName - assumin only one iframe
      var googleSearchFrame = document.getElementsByTagName("iframe");
      if (googleSearchFrame[0]) {
          googleSearchFrame[0].style.height = "65em";
      }
  }
</script>

<!-- Google Search Result Snippet Ends -->';

		return $output;
}