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highlight

Type:	code fragment
Added by:	stevo_x
Entered:	30/10/2002
Last modified:	01/11/2001
Rating:	- (fewer than 3 votes)
Views:	4440

This Function allows to highlight assigned case insensitive Parts (search) of a string (subject) with pre defined HTML-Tags

<?php
function highlight($search,$subject,$hlstart="<b>",$hlend="</b>") {

                                

                                $srchlen=strlen($search);    // lenght of searched string

                                if ($srchlen==0) return $subject;

                                $find = $subject;

                                while ($find = stristr($find,$search)) {    // find $search text in $subject - case insensitiv

                                    $srchtxt = substr($find,0,$srchlen);    // get new search text 

                                    $find=substr($find,$srchlen);

                                    $subject = str_replace($srchtxt,"$hlstart$srchtxt$hlend",$subject);    // highlight founded case insensitive search text 

                                }

                                return $subject;

                            }
?>

Usage Example

$a="Hello world, hello world, hello World, HelLo WOrld";

                            

                            echo highlight("hello",$a,"<span style='color:red'>","</span>");

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