source: extensions/rv_autocomplete/suggestions.php

<?php

define('PHPWG_ROOT_PATH','../../');
include_once( PHPWG_ROOT_PATH.'include/common.inc.php' );

if (!defined('RVAC_ID')) {
        set_status_header(501);
        exit;
}

include_once( 'functions.inc.php' );

$page['root_path'] = get_absolute_root_url(false);

$data = rvac_get_index();

if (isset($_GET['txt'])) {
        foreach($data['src'] as $item)
                echo implode("\t", $item)."\n";
        exit;
}


$ds = str_replace(
        array('\\/', '"q":', '"label":', '"value":', '"w":'),
        array('/', 'q:', 'label:', 'value:', 'w:'),
        json_encode($data['src']));
$js = '$.extend(RVAC, {
        dataSource:'.$ds.',
        dataSourceAltLangIndex: '.$data['altLangIndex'].',
        roots: '.json_encode($data['roots']).',
        minForAltLang: 2,
        stopLookingAfter: 80,
        suggestions: 4,
        maxSuggestions: 8
});
$.each(RVAC.dataSource, function(i,item) {
        item.q = item.q || item.label.toLowerCase()
});
RVAC.start && RVAC.start();';

header("Content-Type: application/javascript; charset=".get_pwg_charset());
echo $js;

file_put_contents(PHPWG_ROOT_PATH.rvac_get_data_file(), $js);
?>