Regular game: how to convert several adjacent BRs into one?

Question

PHP

Line example: Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula < br br br br > Lorem ipsum...< br >
Is it possible to convert several standing in a row "< br> < br> < br> < br>" into one, like this - "< br >" ?

Answer 1

'< br >< br >< br >Lorem ipsum...< br >'.replace(/(<\s?br\s?>){2,}/g,'< br >')

Answer 2

>>> import re
>>> 
>>> s = 'abc<br><br><br><br>def<br><br><br><br>ghi'
>>> re.sub(r'(<br>)+', '<br>', s)
'abc<br>def<br>ghi'
>>>