(PHP 3 >= 3.0.8, PHP 4, PHP 5)
如果成功则返回 TRUE,失败则返回 FALSE。
This function adds attribute(s) to the specified dn. It performs the modification at the attribute level as opposed to the object level. Object-level additions are done by the ldap_add() function.
注: 该函数可安全用于二进制对象。