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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.gnupg-verify">
<refnamediv>
<refname>gnupg_verify</refname>
<refpurpose>Verifies a signed text</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>gnupg_verify</methodname>
<methodparam><type>resource</type><parameter>identifier</parameter></methodparam>
<methodparam><type>string</type><parameter>signed_text</parameter></methodparam>
<methodparam><type>string</type><parameter>signature</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter role="reference">plaintext</parameter></methodparam>
</methodsynopsis>
<para>
Verifies the given <parameter>signed_text</parameter> and returns information about the
signature.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>identifier</parameter></term>
<listitem>
&gnupg.identifier;
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>signed_text</parameter></term>
<listitem>
<para>
The signed text.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>signature</parameter></term>
<listitem>
<para>
The signature.
To verify a clearsigned text, set signature to &false;.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>plaintext</parameter></term>
<listitem>
<para>
The plain text.
If this optional parameter is passed, it is
filled with the plain text.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
On success, this function returns information about the signature.
On failure, this function returns &false;.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Procedural <function>gnupg_verify</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$plaintext = "";
$res = gnupg_init();
// clearsigned
$info = gnupg_verify($res,$signed_text,false,$plaintext);
print_r($info);
// detached signature
$info = gnupg_verify($res,$signed_text,$signature);
print_r($info);
?>
]]>
</programlisting>
</example>
<example>
<title>OO <function>gnupg_verify</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$plaintext = "";
$gpg = new gnupg();
// clearsigned
$info = $gpg -> verify($signed_text,false,$plaintext);
print_r($info);
// detached signature
$info = $gpg -> verify($signed_text,$signature);
print_r($info);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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