(PHP 4 >= 4.0.4, PHP 5)
ldap_get_option — Get the current value for given option
   Sets retval to the value of the specified option.
  
link_identifierAn LDAP link identifier, returned by ldap_connect().
option
       The parameter option can be one of:
       
| Option | Type | 
|---|---|
| LDAP_OPT_DEREF | integer | 
| LDAP_OPT_SIZELIMIT | integer | 
| LDAP_OPT_TIMELIMIT | integer | 
| LDAP_OPT_NETWORK_TIMEOUT | integer | 
| LDAP_OPT_PROTOCOL_VERSION | integer | 
| LDAP_OPT_ERROR_NUMBER | integer | 
| LDAP_OPT_REFERRALS | bool | 
| LDAP_OPT_RESTART | bool | 
| LDAP_OPT_HOST_NAME | string | 
| LDAP_OPT_ERROR_STRING | string | 
| LDAP_OPT_MATCHED_DN | string | 
| LDAP_OPT_SERVER_CONTROLS | array | 
| LDAP_OPT_CLIENT_CONTROLS | array | 
retvalThis will be set to the option value.
   Returns TRUE on success or FALSE on failure.
  
Example #1 Check protocol version
<?php
// $ds is a valid link identifier for a directory server
if (ldap_get_option($ds, LDAP_OPT_PROTOCOL_VERSION, $version)) {
    echo "Using protocol version $version\n";
} else {
    echo "Unable to determine protocol version\n";
}
?>
Note:
This function is only available when using OpenLDAP 2.x.x OR Netscape Directory SDK x.x.