pantinosm Posted February 20, 2007 Share Posted February 20, 2007 Hello everybody. So i have a textbox like google. I want to highlight all the text in my result records that contain ALL the words or ANY of the words in the textbox. Is there a coding i can use? Any help greatly appreciated. Quote Link to comment https://forums.phpfreaks.com/topic/39319-google-like-highlighting/ Share on other sites More sharing options...
boo_lolly Posted February 20, 2007 Share Posted February 20, 2007 if there is code that exists, there is no doubt that you will have to modify it at least a little bit to get it to work with your script. to get it working properly, you're probably going to want to know how to use regex. it's not going to work like plug-n-play. Quote Link to comment https://forums.phpfreaks.com/topic/39319-google-like-highlighting/#findComment-189579 Share on other sites More sharing options...
pantinosm Posted February 20, 2007 Author Share Posted February 20, 2007 I use this script here which someone gave to me. <?php function highlight($str) { $tmp = ''; foreach(explode(' ', $str) as $word) $tmp .= "<span style=\"background-color:pink\">$word</span> "; return trim($tmp); } ?> This function runs when i call echo preg_replace("/$searchterm/ise", 'highlight("\\0")', $result); The problem is that not all keywords are highlighted. It leaves many words back. Sometimes ithighlights, sometimes no. Why is this happenning? Quote Link to comment https://forums.phpfreaks.com/topic/39319-google-like-highlighting/#findComment-189634 Share on other sites More sharing options...
ScotDiddle Posted February 21, 2007 Share Posted February 21, 2007 pantinosm, I couldn't get your code to work... Using your preg_replace function had a parsing error ( Delimiter must not be alphanumeric or backslash ). Also, I could never get it to call your highlight function... Don't have a clue why not. :-\ So, I played around with your concept a bit, and came up with the following generic highlight function. Scot L. Diddle, Richmond VA highlightString.php <?php require_once('include/wordHighlight.php'); $string = 'Now is the time for all good programmers... etc'; highlight("$string", "programmers"); echo $highlightedString; ?> wordHighlight.php <?php function highlight($str, $slectedWord) { global $highlightedString; $highlightedString = ''; foreach(explode(' ', $str) as $word) { $currentWordLength = strlen($word); $lastChar = substr($word,$currentWordLength-1) . ' '; if (substr($word,$currentWordLength-2,2) == '..' ) { $lastChar = '..'; } if (substr($word,$currentWordLength-3,3) == '...' ) { $lastChar = '...'; } $word = str_replace(',', ' ', $word); // replace , by space $word = str_replace('.', ' ', $word); // replace . by space $word = str_replace('?', ' ', $word); // replace ? by space $word = str_replace(':', ' ', $word); // replace ? by space $word = str_replace('!', ' ', $word); // replace ? by space $word = trim($word); if ($word == $slectedWord) { $highlightedString .= ' ' . "<span style=\"background-color:pink\">$word</span>$lastChar"; } else { $highlightedString .= ' ' . $word; } } return trim($highlightedString); } ?> Quote Link to comment https://forums.phpfreaks.com/topic/39319-google-like-highlighting/#findComment-190764 Share on other sites More sharing options...
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