正则表达式与注册商标符号相匹配

Question

I am using PHP preg_replace() to find and replace a company name with their logo. However, this also needs to include the registered trademark symbol (R) at them end. So, how can you write a regular expression to match the following?

Company Name® or Company Name or Company Name<sup>®</sup>

Thanks in advance!

Answer 1

/Company Name(®|<sup>®<\/sup>|)/

or, to make it more clear:

/Company Name(®|<sup>®<\/sup>)?/

It would be even better if you'd chop out the html before, then use only

/Company Name®?/