最近对wordpress的一些小改进很感兴趣，可以让你的博客更加个性，也更有趣味性，下面的代码可以在结果中高亮你所搜索的关键词。首先把第一段代码放在functions.php中： 

function hls_set_query() { 
$query = attribute_escape(get_search_query()); 
if(strlen($query) > 0){ 
echo ' 
<script type="text/javascript"> 
var hls_query = "'.$query.'"; 
</script> 
'; 
} 
} 
function hls_init_jquery() { 
wp_enqueue_script('jquery'); 
} 
add_action('init', 'hls_init_jquery'); 
add_action('wp_print_scripts', 'hls_set_query');　　然后把下面的代码放在header.php中，就OK了。 
<style type="text/css" media="screen"> 
.hls { background: #D3E18A; } 
</style> 
<script type="text/javascript"> 
jQuery.fn.extend({ 
highlight: function(search, insensitive, hls_class){ 
var regex = new RegExp("(<[^>]*>)|(b"+ search.replace(/([-.*+?^${}()|[]/])/g,"$1") +")", insensitive ? "ig" : "g"); 
return this.html(this.html().replace(regex, function(a, b, c){ 
return (a.charAt(0) == "<") ? a : "<strong+ hls_class +"">" + c + "</strong>"; 
})); 
} 
}); 
jQuery(document).ready(function($){ 
if(typeof(hls_query) != 'undefined'){ 
$("#post-area").highlight(hls_query, 1, "hls"); 
} 
}); 
</script>