(PHP 4, PHP 5, PHP 7, PHP 8)
ldap_first_entry — Return first result id
Returns the entry identifier for first entry in the result. This entry identifier is then supplied to ldap_next_entry() routine to get successive entries from the result.
Entries in the LDAP result are read sequentially using the ldap_first_entry() and ldap_next_entry() functions.
ldap通过 ldap_connect() 返回的 LDAP\Connection 实例。
result通过 ldap_list() 或者 ldap_search() 返回的 LDAP\Result 实例。
   Returns an LDAP\ResultEntry instance, 或者在失败时返回 false.
  
| 版本 | 说明 | 
|---|---|
| 8.1.0 | 现在 ldap参数接受 LDAP\Connection
  实例,之前接受有效的ldap linkresource。 | 
| 8.1.0 | The resultparameter expects an LDAP\Result
  instance now; previously, a validldap resultresource was expected. | 
| 8.1.0 | Returns an LDAP\ResultEntry instance now; previously, a resource was returned. | 
