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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.openssl-pkey-export" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>openssl_pkey_export</refname>
<refpurpose>Gets an exportable representation of a key into a string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>openssl_pkey_export</methodname>
<methodparam><modifier role="attribute">#[\SensitiveParameter]</modifier><type class="union"><type>OpenSSLAsymmetricKey</type><type>OpenSSLCertificate</type><type>array</type><type>string</type></type><parameter>key</parameter></methodparam>
<methodparam><type>string</type><parameter role="reference">output</parameter></methodparam>
<methodparam choice="opt"><modifier role="attribute">#[\SensitiveParameter]</modifier><type class="union"><type>string</type><type>null</type></type><parameter>passphrase</parameter><initializer>&null;</initializer></methodparam>
<methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>options</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
<para>
<function>openssl_pkey_export</function> exports
<parameter>key</parameter> as a <acronym>PEM</acronym> encoded string and stores it into
<parameter>output</parameter> (which is passed by reference).
</para>
¬e.openssl.cnf;
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>key</parameter></term>
<listitem>
<para>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>output</parameter></term>
<listitem>
<para>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>passphrase</parameter></term>
<listitem>
<para>
The key is optionally protected by <parameter>passphrase</parameter>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
<parameter>options</parameter> can be used to fine-tune the export
process by specifying and/or overriding options for the openssl
configuration file. See <function>openssl_csr_new</function> for more
information about <parameter>options</parameter>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
<parameter>key</parameter> accepts an <classname>OpenSSLAsymmetricKey</classname>
or <classname>OpenSSLCertificate</classname> instance now;
previously, a &resource; of type <literal>OpenSSL key</literal> or <literal>OpenSSL X.509</literal>
was accepted.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
</refentry>
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