(PHP 4, PHP 5, PHP 7, PHP 8)
ldap_error — Return the LDAP error message of the last LDAP command
   Returns the string error message explaining the error generated by the
   last LDAP command for the given ldap.
   While LDAP errno numbers are standardized, different libraries return
   different or even localized textual error messages. Never check for a
   specific error message text, but always use an error number to check.
  
   Unless you lower your warning level in your php.ini sufficiently or
   prefix your LDAP commands with @ (at) characters to
   suppress warning output, the errors generated will also show up in your
   HTML output.
  
Returns string error message.
| 版本 | 说明 | 
|---|---|
| 8.1.0 | The ldapparameter expects an LDAP\Connection
  instance now; previously, a 资源(resource) was expected. |