突出顯示字符串

Question

的話限制搜索的話，我想強調的關鍵詞搜索，我發現這裏的解決方案，但它正顯示出相匹配的詞整串突出 我想賽後 ，面前只有10word這是什麼我正在使用但不起作用

$text = preg_replace("/^.*?(.{0,1})\b($keyword)\b(.{0,1}).*?$/i", '\1<span class="highlight">\2</span>\3', $text); 
echo $text ; 

Answer 1

現在用php進行了測試。喜歡的東西...

<?php 
$src = 'twelve eleven ten nine eight seven six five four three two one KEYWORD one two three four five six seven eitht nine ten eleven twelve'; 
$keyword = "KEYWORD"; 
$regex = "/(.*?)((\w+\W+){0,10})($keyword\W+)((\w+\W+){0,10})(.*)/i"; 
$text = preg_replace("$regex", '\1<span class="highlight">\2\4\5</span>\7', $src); 
echo $text; 
?> 

...應該這樣做（突出前後的關鍵字加10個字 也許有更緊湊的替代品......

樣品輸入：

twelve eleven ten nine eight seven six five four three two one KEYWORD one two three four five six seven eitht nine ten eleven twelve 

... ...輸出

twelve eleven <span class="highlight">ten nine eight seven six five four three two one KEYWORD one two three four five six seven eitht nine ten </span>eleven twelve