Highlighting the keyword.

Hello All,

I am looking to write code which displays:
from which keyword search a person landed on my website and highlighting them, if somebody has written it already, it would be really great if u can share Or can you please guide me how to go about it.


Thanks in Advance,
PHP Newbie.

 

<?php

$your_text = 'Your text. Here will the keywords be highlighted.';

@extract(@parse_url($_SERVER['HTTP_REFERER']));

if (preg_match('/((fr|g)oogle|msn|yahoo|alexa)/i', $host) AND preg_match('/q(uery)?=([^&]+)/i', $query, $keywords))
{
	$keywords = array_unique(preg_split('/[\s\+]+/', rawurldecode($keywords[2]), -1, PREG_SPLIT_NO_EMPTY));
	
	foreach ($keywords AS $keyword)
	{
		$your_text = preg_replace('/('. preg_quote($keyword) .')/i', '<span style="color: red; font-weight: bold;">$1</span>', $your_text);
	}
}

echo $your_text;

?>

PHP:

Give this a try.

 

Is there a way I can chk this locally
or i gotta try this on live site only?

 

Try this! if you need to run on server please comment first line and uncomment second line $url

<?php

$url="http://www.google.com/search?q=spyware&meta=";
//$url=$_SERVER['HTTP_REFERER'];
@extract(@parse_url($url));
if (preg_match('/((fr|g)oogle|msn|yahoo|alexa)/i', $host) AND preg_match('/q(uery)?=([^&]+)/i', $query, $keywords)){    
$keywords = array_unique(preg_split('/[\s\+]+/', rawurldecode($keywords[2]), -1, PREG_SPLIT_NO_EMPTY)); 

       foreach ($keywords as $keyword)    {        
	   echo "You come from $host with keyword [".$keyword."]";
	   }
 }

?>

PHP:

 

Thanks ColdMoney, it did run, but i faced 2 issues,
1. It doesnt work for multiple keywords
Correct me if I am wrong, its got to do somthing with regular expression
and
2. It aint highlighting the keyword on the page.
I will try my R&D tomorrow.

 

I made a fuction of it.

<?php

function highlight_search_keywords($text)
{
        @extract(@parse_url($_SERVER['HTTP_REFERER']));
       
        if (preg_match('/((fr|g)oogle|msn|yahoo|alexa)/i', $host) AND preg_match('/[qp]=([^&]+)/i', $query, $keywords))
        {
                $keywords = preg_split('/[\s\+\,]+/', rawurldecode($keywords[1]), -1, PREG_SPLIT_NO_EMPTY);
               
                foreach (array_unique($keywords) AS $keyword)
                {
                        $text = preg_replace('/('. preg_quote($keyword) .')/i', '<span style="color: red; font-weight: bold;">$1</span>', $text);
                }
        }
       
        return $text;
}


?>

PHP:

http://www.bytemycode.com/snippets/snippet/588/

It's easier to use this way. And yes, it highlights multiple keyworlds.

 

Yup, it worked, thanx a lot for this mate