Rory Browne wrote:
On 6/8/05, John Nichel <john@xxxxxxxxxxxx> wrote:
Rory Browne wrote:
On 6/8/05, David Duong <david@xxxxxxxxxxx> wrote:
Sebastian wrote:
i'm looking for a function that can highlight certain search terms in a
string. anyone have something already made that i can plugin to my
exisiting code?
I found a couple but they do not work very well.. some break html code
if the string contains the keywords in the html.
thanks.
You can use str_replace to "highlight" the search terms.
For example, you could use the following code for each search term (this
function also accepts arrays, see http://php.net/str_replace):
str_replace ($search_term, "<b>$search_term</b>", $body_text);
Bad idea. Very bad idea.
for example ( using bold to highlight ):
<?pseudo_code
$html = "<html><body>I want to hightlight the word body in this text.
</body></html>";
$search = "body";
$output = str_replace($search, "<b>$search</b>", $html);
// $output == "<html><<b>body</b>>I want to hightlight the word
<b>body</b> in this text. </<b>body</b>></html>";
// see what I mean?
?>
Good catch Rory. A regex replace would work better here.
$search = "body";
$find = "/\b" . $search . "\b/";
preg_replace ( $find, "<b>" . $search . "</b>", $html );
I don't think so. If I'm reading your code correctly you still have
the same problem, as I outlined above. There is no simple solution to
John is using \b in his regexp to denote a word boundary - I don't believe
< counts as a boundary char therefore niether '<body>' or '<body bla="bla">'
would be preg_replace()'d
this. It either involves advanced regex(more advanced than my
understanding of it), or a proper parser.
<?pseudo_code
function highlight_html_string($needle, $haystack);
$retval = "";
$i = 0;
while($i < strlen($haystack)){
$str = get_text_between_certain_point_and_first_instance_of_<($i);
$str = preg_replace(what john said above);
$str .= get_tag_text($i);
$retval .= $str;
$i += strlen($str);
}
return $retval;
?>
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
john@xxxxxxxxxxxx
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