# ldap_set_option

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

ldap_set_option — Set the value of the given option

### 说明

ldap_set_option ( resource `$link_identifier` , int `$option` , mixed `$newval` ) : bool

Sets the value of the specified option to be `newval`.

### 参数

`link_identifier`

  An LDAP link identifier, returned by ldap_connect().

`option`

  The parameter `option` can be one of:

  Option | Type | Available since
  --- | --- | ---
  `LDAP_OPT_DEREF` | integer |
  `LDAP_OPT_SIZELIMIT` | integer |
  `LDAP_OPT_TIMELIMIT` | integer |
  `LDAP_OPT_NETWORK_TIMEOUT` | integer | PHP 5.3.0
  `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_DIAGNOSTIC_MESSAGE` | string |
  `LDAP_OPT_MATCHED_DN` | string |
  `LDAP_OPT_SERVER_CONTROLS` | array |
  `LDAP_OPT_CLIENT_CONTROLS` | array |
  `LDAP_OPT_X_KEEPALIVE_IDLE` | int | PHP 7.1.0
  `LDAP_OPT_X_KEEPALIVE_PROBES` | int | PHP 7.1.0
  `LDAP_OPT_X_KEEPALIVE_INTERVAL` | int | PHP 7.1.0
  `LDAP_OPT_X_TLS_CACERTDIR` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_CACERTFILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_CERTFILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_CIPHER_SUITE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_CRLCHECK` | integer | PHP 7.1.0
  `LDAP_OPT_X_TLS_CRLFILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_DHFILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_KEYFILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_PROTOCOL_MIN` | integer | PHP 7.1.0
  `LDAP_OPT_X_TLS_RANDOM_FILE` | string | PHP 7.1.0
  `LDAP_OPT_X_TLS_REQUIRE_CERT` | integer | PHP 7.0.5

  `LDAP_OPT_SERVER_CONTROLS` and `LDAP_OPT_CLIENT_CONTROLS` require a list of controls, this means that the value must be an array of controls. A control consists of an oid identifying the control, an optional value, and an optional flag for criticality. In PHP a control is given by an array containing an element with the key oid and string value, and two optional elements. The optional elements are key value with string value and key iscritical with boolean value. iscritical defaults to `FALSE` if not supplied. See » draft-ietf-ldapext-ldap-c-api-xx.txt for details. See also the second example below.

`newval`

  The new value for the specified `option`.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 Set protocol version

    <?php
    // $ds is a valid link identifier for a directory server
    if (ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3)) {
        echo "Using LDAPv3";
    } else {
        echo "Failed to set protocol version to 3";
    }
    ?>

Example #2 Set server controls

    <?php
    // $ds is a valid link identifier for a directory server
    // control with no value
    $ctrl1 = array("oid" => "1.2.752.58.10.1", "iscritical" => true);
    // iscritical defaults to FALSE
    $ctrl2 = array("oid" => "1.2.752.58.1.10", "value" => "magic");
    // try to set both controls
    if (!ldap_set_option($ds, LDAP_OPT_SERVER_CONTROLS, array($ctrl1, $ctrl2))) {
        echo "Failed to set server controls";
    }
    ?>

### 注释

> Note:

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

### 参见

- ldap_get_option() - Get the current value for given option