preg_match_all()小问题不明白求解决！
preg_match_all("/\d*/","5555", $images);输出$images数组为：Array ( [0] => Array ( [0] => 5555 [1] => ) )为什么二维数组中会有一个空的索引！ 回...
preg_match_all("/\d*/","5555", $images);输出$images数组为：Array ( [0] => Array ( [0] => 5555 [1] => ) )为什么二维数组中会有一个空的索引！ 回...