[Resolved] google style highlight

pablodelapena

I have searched the forums and found the results confusing. I am not that much of a newbie but feel this is rather a noobish question....

If i have a search page how can i get it to seperate the keywords into individual words and highlight them individually.

i.e: if i have in the url ...keyword=hello+world

How can I have it replace individually hello and world ?

I can make it replace the whole thigneasilly enough but its sperating it into sections which has thrown me.

Would I be right in thinking id use explode and foreach?

Any leads would be awesome.

OK to further my progress I am using this tos earch my DB for the keywords. However it only returns the results of the last keyword. How can I have it include everything? This si ym code:

$keyword = explode(" ", $_GET['keyword']);

foreach ($keyword AS $v) {

$sql = mysql_query("SELECT * FROM privatemessages WHERE from_user='".$_SESSION['MCuserID']."' AND message LIKE '%".$v."%'");

}

Ok, I now have that working in another way. However I have ran into this problem now....

When I attempt to highlight my string it only highlights the last word if there are more than one. say the highlight=hello+world only world is highlighted.

$highlight = explode(" ", $_GET['highlight']);

foreach ($highlight AS $v) {
	$message = str_replace($v, "<font color=red>$v</font>", $row['message']);
}

Nate

does this work?

$highlight = explode(" ", $_GET['highlight']); 

$message = $row['message'];
foreach ($highlight AS $v) { 
    $message = str_replace($v, "<font color=red>$v</font>", $message); 
}

pablodelapena

turns out either works, except it is case sensitive. Is there anyway this can be changed?

Nate

str_ireplace

pablodelapena

awesome, cheers.

poisa

Just so you know, there is a tiny issue with this highlighting method that you should be aware of. I'm talking about the case-insensitive.

Say your original text is "Case Insensitive Searches", and you are trying to highlight this string "ins".

Your output will be "Case insensitive Searches" because the highlight string replaces the actual content. (note the capitalization in the word "insensitive")

This might be a problem on some situations.