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# ldap_get_option

(PHP 4 >= 4.0.4)

ldap_get_option -- Get the current value for given option

## Description

``bool ldap_get_option` (int link_identifier, int option, mixed retval)`

Sets `retval` to the value of the specified option, and returns `TRUE` on success and `FALSE` on error.

The parameter `option` can be one of: LDAP_OPT_DEREF, LDAP_OPT_SIZELIMIT, LDAP_OPT_TIMELIMIT, LDAP_OPT_PROTOCOL_VERSION, LDAP_OPT_ERROR_NUMBER, LDAP_OPT_REFERRALS, LDAP_OPT_RESTART, LDAP_OPT_HOST_NAME, LDAP_OPT_ERROR_STRING, LDAP_OPT_MATCHED_DN. These are described in draft-ietf-ldapext-ldap-c-api-xx.txt

This function is only available when using OpenLDAP 2.x.x OR Netscape Directory SDK x.x, and was added in PHP 4.0.4

Example 1. Check protocol version
    // $ds is a valid link identifier for a directory server
    if (ldap_get_option($ds, LDAP_OPT_PROTOCOL_VERSION, $version))
        echo "Using protocol version $version";
    else
        echo "Unable to determine protocol version";

See also ldap_set_option().

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