HTML标签内的正则表达式

Question

My regex (<(div|i)\\b[^>]*>)(\\bTEST\\b)(<\\/(div|i)\\s*>)

replace = 'MOM' From

<div clas="dfsdf">TEST</div>

is

MOM

But I want the HTML tag persists It should look like this: <div clas="dfsdf">MOM</div>

What am I doing wrong?

Answer 1

If you just replace with MOM , your whole match will be replaced by MOM ..In your regex <div clas="dfsdf"> is group 1 ($1), TEST is capture group 3 ($3) and </div> is group 4 ($4)... So, you have to replace it with the following

$1MOM$4

to contain what is required and replace just the capture group corresponding to TEST .

Answer 2

您可以使用环顾四周 ：

preg_replace('~(?<=<(?:div|i)\b[^>]*>)TEST(?=</\s*(?:div|i)\s*>)~', "MOM', $str);