PHP Manual
LDAP Functions
Get the current value for given option

ldap_get_option

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

ldap_get_option — Get the current value for given option

Description

ldap_get_option(LDAP\Connection $ldap, int $option, array|string|int &$value = null): bool

Sets value to the value of the specified option.

Parameters

ldap

An LDAP\Connection instance, returned by ldap_connect().

option

The parameter option can be one of:

Option	Type	since
`LDAP_OPT_DEREF`	int
`LDAP_OPT_SIZELIMIT`	int
`LDAP_OPT_TIMELIMIT`	int
`LDAP_OPT_NETWORK_TIMEOUT`	int
`LDAP_OPT_PROTOCOL_VERSION`	int
`LDAP_OPT_ERROR_NUMBER`	int
`LDAP_OPT_DIAGNOSTIC_MESSAGE`	int
`LDAP_OPT_REFERRALS`	int
`LDAP_OPT_RESTART`	int
`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
`LDAP_OPT_X_KEEPALIVE_IDLE`	int	7.1
`LDAP_OPT_X_KEEPALIVE_PROBES`	int	7.1
`LDAP_OPT_X_KEEPALIVE_INTERVAL`	int	7.1
`LDAP_OPT_X_TLS_CACERTDIR`	string	7.1
`LDAP_OPT_X_TLS_CACERTFILE`	string	7.1
`LDAP_OPT_X_TLS_CERTFILE`	string	7.1
`LDAP_OPT_X_TLS_CIPHER_SUITE`	string	7.1
`LDAP_OPT_X_TLS_CRLCHECK`	int	7.1
`LDAP_OPT_X_TLS_CRL_NONE`	int	7.1
`LDAP_OPT_X_TLS_CRL_PEER`	int	7.1
`LDAP_OPT_X_TLS_CRL_ALL`	int	7.1
`LDAP_OPT_X_TLS_CRLFILE`	string	7.1
`LDAP_OPT_X_TLS_DHFILE`	string	7.1
`LDAP_OPT_X_TLS_KEYFILE`	string	7.1
`LDAP_OPT_X_TLS_PACKAGE`	string	7.1
`LDAP_OPT_X_TLS_PROTOCOL_MIN`	int	7.1
`LDAP_OPT_X_TLS_RANDOM_FILE`	string	7.1
`LDAP_OPT_X_TLS_REQUIRE_CERT`	int

value

This will be set to the option value.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.1.0	The `ldap` parameter expects an LDAP\Connection instance now; previously, a resource was expected.

Examples

Example #1 Check protocol version


<?php
// $ds is a valid LDAP\Connection instance for a directory server
if (ldap_get_option($ds, LDAP_OPT_PROTOCOL_VERSION, $version)) {
    echo "Using protocol version $version\n";
} else {
    echo "Unable to determine protocol version\n";
}
?>