看不懂的php数据结构？-灵析社区

这是我拿到的一组php数据，我突然看不明白这是什么数据了？我去遍历不行，用arr[0]可以拿到objectclass的数组，但是这数组为什么是(6)? array(6) { ["count"] => int(5) [0] => array(8) { ["objectclass"] => array(3) { ["count"] => int(2) [0] => string(3) "top" [1] => string(18) "organizationalUnit" } [0] => string(11) "objectclass" ["ou"] => array(2) { ["count"] => int(1) [0] => string(6) "people" } [1] => string(2) "ou" ["description"] => array(2) { ["count"] => int(1) [0] => string(18) "存放人员信息" } [2] => string(11) "description" ["count"] => int(3) ["dn"] => string(38) "ou=people,dc=info,dc=huel,dc=edu,dc=cn" } [1] => array(8) { ["objectclass"] => array(3) { ["count"] => int(2) [0] => string(3) "top" [1] => string(18) "organizationalUnit" } [0] => string(11) "objectclass" ["ou"] => array(2) { ["count"] => int(1) [0] => string(5) "admin" } [1] => string(2) "ou" ["description"] => array(2) { ["count"] => int(1) [0] => string(27) "存放管理员用户信息" } [2] => string(11) "description" ["count"] => int(3) ["dn"] => string(47) "ou=admin,ou=people,dc=info,dc=huel,dc=edu,dc=cn" } [2] => array(8) { ["objectclass"] => array(3) { ["count"] => int(2) [0] => string(3) "top" [1] => string(18) "organizationalUnit" } [0] => string(11) "objectclass" ["ou"] => array(2) { ["count"] => int(1) [0] => string(4) "adm2" } [1] => string(2) "ou" ["description"] => array(2) { ["count"] => int(1) [0] => string(30) "存放重置密码用户信息" } [2] => string(11) "description" ["count"] => int(3) ["dn"] => string(46) "ou=adm2,ou=people,dc=info,dc=huel,dc=edu,dc=cn" } [3] => array(8) { ["objectclass"] => array(3) { ["count"] => int(2) [0] => string(3) "top" [1] => string(18) "organizationalUnit" } [0] => string(11) "objectclass" ["ou"] => array(2) { ["count"] => int(1) [0] => string(7) "teacher" } [1] => string(2) "ou" ["description"] => array(2) { ["count"] => int(1) [0] => string(24) "存放教师用户信息" } [2] => string(11) "description" ["count"] => int(3) ["dn"] => string(49) "ou=teacher,ou=people,dc=info,dc=huel,dc=edu,dc=cn" } [4] => array(8) { ["objectclass"] => array(3) { ["count"] => int(2) [0] => string(3) "top" [1] => string(18) "organizationalUnit" } [0] => string(11) "objectclass" ["ou"] => array(2) { ["count"] => int(1) [0] => string(7) "student" } [1] => string(2) "ou" ["description"] => array(2) { ["count"] => int(1) [0] => string(24) "存放学生用户信息" } [2] => string(11) "description" ["count"] => int(3) ["dn"] => string(49) "ou=student,ou=people,dc=info,dc=huel,dc=edu,dc=cn" } }