用PHP替换带标记链接的单词

Question

I have a text ($text) and an array of words ($tags). These words in the text should be replaced with links to other pages so they don't break the existing links in the text. In CakePHP there is a method in TextHelper for doing this but it is corrupted and it breaks the existing HTML links in the text. The method suppose to work like this:

$text=Text->highlight($text,$tags,'<a href="/tags/\1">\1</a>',1);

Below there is existing code in CakePHP TextHelper:

function highlight($text, $phrase, $highlighter = '<span class="highlight">\1</span>', $considerHtml = false) {
  if (empty($phrase)) {
    return $text;
  }

  if (is_array($phrase)) {
    $replace = array();
    $with = array();

    foreach ($phrase as $key => $value) {
      $key = $value;
      $value = $highlighter;
      $key = '(' . $key . ')';
      if ($considerHtml) {
        $key = '(?![^<]+>)' . $key . '(?![^<]+>)';
      }
      $replace[] = '|' . $key . '|ix';
      $with[] = empty($value) ? $highlighter : $value;
    }
    return preg_replace($replace, $with, $text);
  } else {
    $phrase = '(' . $phrase . ')';
    if ($considerHtml) {
      $phrase = '(?![^<]+>)' . $phrase . '(?![^<]+>)';
    }

    return preg_replace('|'.$phrase.'|i', $highlighter, $text);
  }
}

Answer 1

This code works just fine. What you may need to do is check the CSS for the <span class="highlight"> and make sure it is set to some color that will allow you to distinguish that it is high lighted.

.highlight { background-color: #FFE900; }