Hightlight Search Results

[alexu_]

I am trying to highlight (bold) the results of a simple search using multiple keywords.

The problem is that I don't want simple highlight (this is easy using regular expressions) but also show only those parts of the description that contain keywords like Google does.

for example:

the description is:

This is a basic example that shows you how to highlight text on a page with PHP after you do a search. This is great if you want to add a search to your site and want your users to see the search text highlights in search results.

and the keywords are:

php highlight search results

so the output should be something similar to:

... is a basic example that shows you how to highlight text on a page with PHP after
you do ... want your users to see the search text highlights in search results. ...

[rehfeld]

$string = 'php highlight search results';

$words = array_unique(explode(' ', $string));

// now use a loop

the array_unique is so you dont double highlight something if the user entered the same term more than once.

you may also want to build someting in to handle if the user entered more than 1 space between certain words.

[alexu_]

the main problem is how to cut text and insert ... ?

where to do that in order to make it look better (having keywords in remaining text) ?

[rehfeld]

oh i didnt notice you wanted to do that.

i would prob highlight all the text first, then use strpos to find the positions of the highlighted parts, and break up peices that are longer than say 30 characters that dont contain a highlighted term.

strpos()
substr()

should do the job.