Question

我想突出显示搜索到的关键字，我在这里找到了解决方案，但它显示了整个字符串，突出显示匹配的单词比赛前后我只想要10个字这是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

现在用php测试。有点像...

<?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;
?>

...应该这样做（突出显示关键字加10个字之前和之后。可能还有更紧凑的替代品......

示例输入：

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

......输出......

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

使用String的有限单词突出显示搜索到的单词

1 个答案: