[英]Make this Regex work with negative lookahead
I'm doing an html and bbcode parser. 我正在做一个html和bbcode解析器。 I have this regex that catches repeated groups from the inside-out:
我有这个正则表达式可以从内到外捕获重复的组:
$re = '/<b>((?:(?!<\/?b>).)*)<\/b>/is';
But I want to be able to match <b class=”string”>text</b>
or any other attribute inside. 但我希望能够匹配
<b class=”string”>text</b>
或内部的任何其他属性。 I was already doing it by using: 我已经通过使用以下方法做到了:
'/<b((\s)+?.*?)?\>(.*?)<\/b>/is'
But now when trying to join them and add the new negative lookahead, I cannot make it work. 但是现在当尝试加入它们并添加新的否定前瞻时,我无法使其正常工作。
I tried '/<b((\\s)+?.*?)?\\((?:(?!</?b((\\s)+?.*?)?>).)*)<\\/b>/is'
but does not work properly, for this: 我试过
'/<b((\\s)+?.*?)?\\((?:(?!</?b((\\s)+?.*?)?>).)*)<\\/b>/is'
但不能正常运行,为此:
<b class=”string2”><b class=”string”>text</b></b>
It matches from the first b tag, and it shouldn't. 它与第一个b标签匹配,但不匹配。 I would like to get:
我想得到:
<b class=”string2”>[b]text[/b]</b>
This will all < b > with [b]: 所有<b>将带有[b]:
<?php
$str = '<b>test</b><b class=”string2”><b class=”string”>text</b></b>';
$prev = '';
while ($prev != $str) {
$prev = $str;
$str = preg_replace("/<b[ a-z0-9\"'\=”]*?>(.*?)<\/b>/is","[b]$1[/b]",$str);
}
echo $str;
?>
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