"like" search and highlighting in PHP - php

Question

I have list of brands and want to provide a search function with highlighting. For example, there are the following brands
Apple
Cewe Color
L'Oréal
Microsoft
McDonald's
Tom Tailor
The user then types lor in search form. I'm using the following snippet for searching
class search {
private function simplify($str) {
return str_replace(array('&',' ',',','.','?','|','\'','"'), '', iconv('UTF-8', 'ASCII//TRANSLIT', $str));
}
public function do_search($search) {
$search = self::simplify($search);
$found = array();
foreach (self::$_brands as $brand) {
if (mb_strstr(self::simplify($brand['name']), $search) !== false) $found[]= $brand;
}
return $found;
}
}
That gives me:
Cewe Color
L'Oréal
Tom Tailor
How would be a highlighting possible? Like:
Cewe Co<b>lor</b>
L'<b>Oré</b>al
Tom Tai<b>lor</b>
Btw: I know, that most things can be done with str_replace(), but that fit my needs not in all cases

Answer 1

$highlighted = str_replace($search, "<b>$search</b>", $brand);
would be the simplest method.

Answer 2

:)
Works with FedEx also ;)
$_brands = array
(
"Apple",
"Cewe Color",
"L'Oréal",
"Microsoft",
"McDonald's",
"Tom Tailor"
);
$q = 'lor';
$search = clean($q);
foreach($_brands as $key => $brand){
$brand = clean($brand);
$x = stripos($brand, $search);
if($x !== false){
$regexp = NULL;
$l = strlen($q);
for($i = 0; $i < $l; $i++){
$regexp .= mb_strtoupper($q[$i]).'.?';
}
$regexp = substr($regexp, 0, strlen($regexp) - 2);
$new = $_brands[$key];
$new = preg_replace('#('.$regexp.')#ui', '<b>$0</b>', $new);
echo $new."<br />";
}
}
function clean($string){
$string = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $string);
$string = preg_replace('#[^\w]#ui', '', $string);
return $string;
}

Answer 3

self::$_brands contains result from database (containing columns name, name_lower, name_translit, name_simplified)
class search {
private function translit($str) {
return iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', str_replace(array('ä', 'ü', 'ö', 'ß'), array('a', 'u', 'o', 's'), mb_strtolower($str)));
}
private function simplify($str) {
return preg_replace('/([^a-z0-9])/ui', '', self::translit($str));
}
public function do_search($simplified) {
$found = array();
foreach (self::$_brands as $brand) {
if (mb_strstr($brand['name_simplified'], $simplified) !== false) $found[]= $brand;
}
return $found;
}
private function actionDefault() {
$search = $_POST['search_fld'];
$simplified = self::simplify($search);
$result = self::do_search($simplified);
$brands = array();
foreach ($result as $brand) {
$hl_start = mb_strpos($brand['name_simplified'], $simplified);
$hl_len = mb_strlen($simplified);
$brand_len = mb_strlen($brand['name']);
$tmp = '';
$cnt_extra = 0;
$start_tag = false;
$end_tag = false;
for ($i = 0; $i < $brand_len; $i++) {
if (($i - $cnt_extra) < mb_strlen($brand['name_simplified']) && mb_substr($brand['name_translit'], $i, 1) != mb_substr($brand['name_simplified'], $i - $cnt_extra, 1)) $cnt_extra++;
if (($i - $cnt_extra) == $hl_start && !$start_tag) {
$tmp .= '<b>';
$start_tag = true;
}
$tmp .= mb_substr($brand['name'], $i, 1);
if (($i - $cnt_extra + 1) == ($hl_start + $hl_len) && !$end_tag) {
$tmp .= '</b>';
$end_tag = true;
}
}
if ($start_tag && !$end_tag) $tmp .= '</b>';
$brands[] = "" . $tmp . "";
}
echo implode(' | ', $brands);
}
}