[key] => userBo Object

分成数组

$v = '[key] => userBo Object';
preg_match_all("/([\s]*)([\S]*[\s]*\=\>\s([\S]*)[\s]?([\S]*))/",$v,$va);
$va[0][0] = '[key] => userBo Object';
$va[1][0] = '';
$va[2][0] = '[key] => userBo Object';
$va[3][0] = 'userBo';
$va[4][0] = 'Object';