Question

我有这样的文字：

$string = '
And God<WH430> said<WH559>, Behold<WH2009>, I have given<WH5414> you every herb<WH6212>
bearing<WH2232> seed<WH2233>, which <FI>is<Fi> upon the face<WH6440> of all the 
earth<WH776>, and every tree<WH6086>, in the which <FI>is<Fi> the fruit<WH6529> of a 
tree<WH6086> yielding<WH2232> seed<WH2233>; to you it shall be<WH1961> for meat<WH402>.
<RF>bearing...: Heb. seeding seed<Rf><RF>yielding...: Heb. seeding seed<Rf>';

这段代码：

$search = '/<RF>(.*)<Rf>/';
$replace = '&nbsp;<sup data-tooltip class="has-tip" title="$1"> note </sup>';
$string = preg_replace($search, $replace, $string);

我希望正则表达式单独替换每个标记，但是使用此代码我得到了这个：

And God<WH430> said<WH559>, Behold<WH2009>, I have given<WH5414> you every herb<WH6212>
bearing<WH2232> seed<WH2233>, which <FI>is<Fi> upon the face<WH6440> of all the 
earth<WH776>, and every tree<WH6086>, in the which <FI>is<Fi> the fruit<WH6529> of a 
tree<WH6086> yielding<WH2232> seed<WH2233>; to you it shall be<WH1961> for meat<WH402>.
<sup data-tooltip class="has-tip" title="bearing...: Heb. seeding seed<Rf>
<RF>yielding...: Heb. seeding seed"> note </sup>

所以，它只是跳过中间的标签，直到文本末尾的最后一个......我怎样才能得到......某个tekst的每个实例......单独替换？

Answer 1

你的正则表达式太贪心了，所以.*消耗尽可能多的文本。将其修改为：

/<RF>(.*?)<Rf>/
        ^
        Added question mark

这将使正则表达式根据需要捕获 as 文本以匹配表达式。

Answer 2

如果您确定自己的文字不包含<，则可以执行以下操作：

$search = '~<RF>([^<]*+)<Rf>~';

否则你可以使用：

$search = '~<RF>((?>[^<]++|<(?!Rf>))*+)<Rf>~';

在PHP中使用正则表达式将标签的内容替换为带有一些旧内容和一些新内容的新标签

2 个答案: