php - preg_replace() 多行

Question

我再次遇到 preg_replace() 问题。我非常需要一本关于 preg_replace() 的书。

我的意图是替换 <td> author </td> 与 <td> Level1 </td>
有任何想法吗？ <td> author </td> 被其他 HTML 元素包裹:

<td align="center">
  <a onclick="return listItemTask('cb1','block')" href="javascript:void(0);">
    <img width="16" height="16" border="0" alt="Blocked" src="images/tick.png">
  </a>
</td>
<td>
  Author
</td>

Answer 1

来自 Perl regular expression manual page :(或 PHP PCRE docs)

Modifiers

Matching operations can have various modifiers. Modifiers that relate to the interpretation of the regular expression inside are listed below.

• s: Treat string as single line. That is, change "." to match any character whatsoever, even a newline, which normally it would not match.