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發表時間：2014/10/15 5:17 |
- Webmaster
- 註冊日: 2008/2/19
- 來自:
- 發表數: 15766
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- [分享]使用正規表示式（RegExp）來處裡 HTML 註解（comments）
- RegExp to strip HTML comments
Looking for a regexp sequence of matches and replaces (preferably PHP but doesn't matter) to change this (the start and end is just random text that needs to be preserved).
IN:
fkdshfks khh fdsfsk
<!--g1-->
<div class='codetop'>CODE: AutoIt</div>
<div class='geshimain'>
<!--eg1-->
<div class="autoit" style="font-family:monospace;">
<span class="kw3">msgbox</span>
</div>
<!--gc2-->
<!--bXNnYm94-->
<!--egc2-->
<!--g2-->
</div>
<!--eg2-->
fdsfdskh
to this OUT:
fkdshfks khh fdsfsk
<div class='codetop'>CODE: AutoIt</div>
<div class='geshimain'>
<div class="autoit" style="font-family:monospace;">
<span class="kw3">msgbox</span>
</div>
</div>
fdsfdskh
Thanks.
Are you just trying to remove the comments? How about
or the slightly better (suggested by the questioner himself):
But remember, HTML is not regular, so using regular expressions to parse it will lead you into a world of hurt when somebody throws bizarre edge cases at it.
preg_replace('/<!--(.*)-->/Uis', '', $html)
This PHP code will remove all html comment tags from the $html string.
Do not forget to consider conditional comments, as
will remove them. Try this instead:
This will also remove downlevel-revealed conditional comments, though.
EDIT:
This won't remove downlevel-revealed or downlevel-hidden comments.
Ah I've done it,
Try the following if your comments contain line breaks:
these code is also remove javascript code. that's too bad :|
here's the example javascript code will be remove with this code:
<script type="text/javascript"><!--
var xxx = 'a';
//-->
</script>
Works in javascript and VBScript also as "." doesn't match line breaks in all languages
share|improve this answer
function remove_html_comments($html) {
$expr = '/<!--[\s\S]*?-->/';
$func = 'rhc';
$html = preg_replace_callback($expr, $func, $html);
return $html;
}
function rhc($search) {
list($l) = $search;
if (mb_eregi("\[if",$l) || mb_eregi("\[endif",$l) ) {
return $l;
}
}
冷日表示：
如何使用正規表示式真的可以很便利的幫你處理檔案，大量節省你的時間！
特別是在處理別人家的 HTML 的時候，不管是 TAG 或是註解，正規表示式都是好物阿！
一般來說下面這樣就夠用了，但是其他的資料還是可以參考參考喔！
原文出處：php - RegExp to strip HTML comments - Stack Overflow
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