First, I know I can get the very same result with explode, just want to know why it is not working in PHP
preg_split('/(.+,)+(.+)/im', 'New York, NY, United States');
It returns
array (
0 => '',
1 => '',
)
Why? It should returns: ['New York, NY, ', 'United States'] right?
Using preg_split you can make :
preg_split("/,\s/", 'New York, NY, United States');
This function needs the pattern of the separator.
['New York, NY, ', 'United States'] that have only two elements.
New York, NY, the second one is United StatesYou are actually doing a match for what you want, not on what you want to use to split:
preg_match('/(.*,)+ (.*)/', $subject, $result);
would get the matches in $result
note: I've added a space and removed the multi line modifiers, there are not needed in your case.
If you want to use preg split, you need to use a negative lookahead to get the last ,:
preg_split('/(,)(?!.*,)/i', 'New York, NY, United States');
In order to get the array: ['New York, NY, ', 'United States'], remove the second quantifier and use preg_match instead:
preg_match('/^(.+,)(.+?)$/im', 'New York, NY, United States', $match);
