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<refentry xml:id="function.ldap-set-option" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ldap_set_option</refname>
  <refpurpose>Set the value of the given option</refpurpose>
 </refnamediv>

  <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>ldap_set_option</methodname>
   <methodparam><type>resource</type><parameter>link_identifier</parameter></methodparam>
   <methodparam><type>int</type><parameter>option</parameter></methodparam>
   <methodparam><type>mixed</type><parameter>newval</parameter></methodparam>
  </methodsynopsis>
  <para>
   Sets the value of the specified option to be <parameter>newval</parameter>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>link_identifier</parameter></term>
     <listitem>
      <para>
       An LDAP link identifier, returned by <function>ldap_connect</function>.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>option</parameter></term>
     <listitem>
      <para>
       The parameter <parameter>option</parameter> can be one of:
       <informaltable>
        <tgroup cols="2">
         <thead>
          <row>
           <entry>Option</entry>
           <entry>Type</entry>
           <entry>Available since</entry>
          </row>
         </thead>
         <tbody>
          <row>
           <entry><constant>LDAP_OPT_DEREF</constant></entry>
           <entry>integer</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_SIZELIMIT</constant></entry>
           <entry>integer</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_TIMELIMIT</constant></entry>
           <entry>integer</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_NETWORK_TIMEOUT</constant></entry>
           <entry>integer</entry>
           <entry>PHP 5.3.0</entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_PROTOCOL_VERSION</constant></entry>
           <entry>integer</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_ERROR_NUMBER</constant></entry>
           <entry>integer</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_REFERRALS</constant></entry>
           <entry>bool</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_RESTART</constant></entry>
           <entry>bool</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_HOST_NAME</constant></entry>
           <entry>string</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_ERROR_STRING</constant></entry>
           <entry>string</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_MATCHED_DN</constant></entry>
           <entry>string</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_SERVER_CONTROLS</constant></entry>
           <entry>array</entry>
           <entry></entry>
          </row>
          <row>
           <entry><constant>LDAP_OPT_CLIENT_CONTROLS</constant></entry>
           <entry>array</entry>
           <entry></entry>
          </row>
         </tbody>
        </tgroup>
       </informaltable>
      </para>
      <para>
       <constant>LDAP_OPT_SERVER_CONTROLS</constant> and 
       <constant>LDAP_OPT_CLIENT_CONTROLS</constant> require a list of
       controls, this means that the value must be an array of controls. A
       control consists of an <emphasis>oid</emphasis> identifying the control,
       an optional <emphasis>value</emphasis>, and an optional flag for
       <emphasis>criticality</emphasis>. In PHP a control is given by an
       array containing an element with the key <emphasis>oid</emphasis>
       and string value, and two optional elements. The optional
       elements are key <emphasis>value</emphasis> with string value
       and key <emphasis>iscritical</emphasis> with boolean value.
       <emphasis>iscritical</emphasis> defaults to <emphasis>&false;</emphasis>
       if not supplied. See <link 
       xlink:href="&url.ldap.openldap-c-api;">draft-ietf-ldapext-ldap-c-api-xx.txt</link>
       for details. See also the second example below.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>newval</parameter></term>
     <listitem>
      <para>
       The new value for the specified <parameter>option</parameter>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Set protocol version</title>
    <programlisting role="php">
<![CDATA[
<?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";
}
?>
]]>
    </programlisting>
   </example>
   <example>
    <title>Set server controls</title>
    <programlisting role="php">
<![CDATA[
<?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";
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <para>
    This function is only available when using OpenLDAP 2.x.x OR Netscape
    Directory SDK x.x.
   </para>
  </note>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>ldap_get_option</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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