正则表达式。 如何在分号后得到单词

Question

I'm trying to get all the words(surnames) only after every semicolon appearance.

I've tried this regex, but it's not working correctly:

(?:.*?;)([a-zA-ZñÑ]+)

Here's the example line I want to filter with regex:

Walter Shelter, Mary; Johnson Smith, Robert; Dickinson Queen, Patty

Here's the result I want to get:

Walter Johnson Dickinson

Beforehand, thanks a lot for your help!

Answer 1

You can use this regex:

(?:(?<=^)|(?<=; ))\w+

Or this shorter one:

(?<=; |^)\w+

RegEx Demo

Code:

$s = 'Walter Shelter, Mary; Johnson Smith, Robert; Dickinson Queen Patty';
preg_match_all('/(?<=; |^)\w+/', $s, $m);
print_r($m);

Output:

Array
(
    [0] => Walter
    [1] => Johnson
    [2] => Dickinson
)