# ldap_get_option

(PHP 4 >= 4.0.4, PHP 5)

ldap_get_option — Get the current value for given option

### Description

bool ldap_get_option ( resource `$link_identifier` , int `$option` , mixed `&$retval` )

Sets `retval` to the value of the specified option.

### Parameters

`link_identifier`

  An 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

`retval`

  This will be set to the option value.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Examples

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";
}
?>`

### Notes

> Note: This function is only available when using OpenLDAP 2.x.x OR Netscape Directory SDK x.x.

### See Also

- ldap_set_option()