Highlight keywords in a paragraph

Question

I need to highlight a keyword in a paragraph, as google does in its search results. Let\'s assume that I have a MySQL db with blog posts. When a user searches for a certain

Answer 1

Maybe you could do something like this when you're connected to the database:

$keyword = $_REQUEST["keyword"]; //fetch the keyword from the request
$result = mysql_query("SELECT * FROM `posts` WHERE `content` LIKE '%".
        mysql_real_escape_string($keyword)."%'"); //ask the database for the posttexts
while ($row = mysql_fetch_array($result)) {//do the following for each result:
  $text = $row["content"];//we're only interested in the content at the moment
  $text=substr ($text, strrpos($text, $keyword)-150, 300); //cut out
  $text=str_replace($keyword, ''.$keyword.'', $text); //highlight
  echo htmlentities($text); //print it
  echo "
";//draw a line under it
}