我应该使用哪个正则表达式？

Question

If this is my string : "blablabla (blablabla)". Which regular expression should i use to split the string in such a way that i get returned:

1. "blablabla"
2. "(blablabla)"

Btw, I want to use the function mb_split.

EDIT The string can alsob be "blablabla blablabla blablabla (blablabla). explode() wouldn't work because of this.

EDIT, this is what i use now:

for example, $name = "blabla blabla blabla blabla (blabla)";

$name = explode(' ', $name);
$last = array_pop($name);
$sentence = null; 
foreach ($name as $names) {
$sentence .= $names.' ';
}
$sentence = mb_substr($title, 0, -1, 'UTF-8');

Answer 1

If you're matching on a space that is followed by a '(', the pattern on which to split can be:

\s(?=\()