|
|
 |
 |
Free PHP Syntax Highlight script
<?
/**
* Copyright (C) 2003 Eric Bodden
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Highlights the searchwords and in the string with the given color.
* Also takes care that no replacement inside HTML tags is made.
* @param $search_words array of words to highlight
* @param $string String to parse
* @param $bgcolor color or array of colors to highlight with
*
* Changelog:
* V1.0 Initial Version
* V1.1 Added capability of highlighting in multiple colors.
* Thanks to Richard Danby [rdanby@cinoan.com].
*
* Example one: applying to a file with default color:
* $fd = fopen ($page, "r");
* $size = filesize($page);
* $html_text = fread ($fd, $size);
* $keywords = explode(" ",$query);
* print highlight_search($keywords,$html_text);
*
* Example two: applying to a string with array of colors:
* query="this test what";
* $keywords = explode(" ",$query);
* $colors[0]='#FF66CC';
* $colors[1]='#FFFF00';
* $colors[2]='#66FFFF';
* $colors[3]='#99CC00';
* $colors[4]='#9999FF';
* $html_text='<html><body>Lets see if this little test does what I expect this to do.</html></body>';
* print highlight_search($keywords,$html_text,$colors);
*/
function highlight_search($search_words,$string,$bgcolors='yellow')
{
if (is_array($bgcolors)) {
$no_colors=count($bgcolors);
} else {
$temp=$bgcolors;
unset($bgcolors);
$bgcolors[0]=$temp;
$no_colors=1;
}
$word_no=0;
foreach($search_words as $search_word)
{
$regex1 = ">[^<]*(";
$regex2 = ")[^<]*<";
preg_match_all("/".$regex1.$search_word.$regex2."/i", $string, $matches, PREG_PATTERN_ORDER);
foreach($matches[0] as $match)
{
preg_match("/$search_word/i", $match, $out);
$case_sensitive_search_word = $out[0];
$newtext = str_replace($case_sensitive_search_word,"<span style=\"background-color: ".$bgcolors[($word_no % $no_colors)].";\">$case_sensitive_search_word</span>", $match);
$string = str_replace($match, $newtext, $string);
}
$word_no++;
}
return $string;
}
?>
Tags:
developer,
file,
php,
scripts
|
