note 42841 added to function.preg-replace

A function to highlight words inside a html document by inserting a <span class="highlight"></span> around the word. The function only match words outside html tags and outside the head, script and textarea areas. function Highlight($words,$text) {//By CF 2004 //make sure words is an array if (!is_array($words)) $words[]=$words; //make search and replace patterns foreach ($words as $value) { $pattern[]="/(>[^<]*?)($value)/si"; $replace[]='\\1<span class="highlight">\\2</span>'; } //Do not want to search and replace inside <head> <script> and <textarea> areas. if (preg_match_all( "'<(head|script|textarea)[^>]*?>.*?</\\1[^>]*?>'si", $text, $nosearch)) { //only want the contents of the preg_match_all $nosearch=$nosearch[0]; reset($nosearch); //Next split the text according to the tags $parts=preg_split( "'<(head|script|textarea)[^>]*?>.*?</\\1[^>]*?>'si", $text); //now search and replace all parts foreach ($parts as $value) { //add an '>' to make sure the first part of the string get searched as well. $temp=preg_replace($pattern,$replace,'>'.$value); //remove the '>' $result.=substr($temp,1); //insert the matches from the preg_match_all $result.=current($nosearch); next($nosearch); } } else { //no matching parts, so an easy case. Just 1 search and replace needed. $result=preg_replace($pattern,$replace,'>'.$text); $result=substr($result,1); } return $result; } ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+42841 Delete -- http://master.php.net/manage/user-notes.php?action=delete+42841&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+42841&report=yes Search -- http://master.php.net/manage/user-notes.php