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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<refentry id="function.id3-get-version">
<refnamediv>
<refname>id3_get_version</refname>
<refpurpose>Get version of an ID3 tag</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>id3_get_version</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<para>
<function>id3_get_version</function> retrieves the version(s) of the ID3 tag(s) in
the MP3 file. As a tag can contain ID3 v1.x and v2.x tags, the return value of this
function should be bitwise compared with the predefined constants <constant>ID3_V1_0</constant>,
<constant>ID3_V1_1</constant> and <constant>ID3_V2</constant>.
</para>
<note>
<simpara>Instead of a filename you may also pass a valid stream resource.</simpara>
</note>
<para>
<example>
<title><function>id3_get_version</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$version = id3_get_version( "path/to/example.mp3" );
if ($version & ID3_V1_0) {
echo "Contains a 1.x tag\n";
}
if ($version & ID3_V1_1) {
echo "Contains a 1.1 tag\n";
}
if ($version & ID3_V2) {
echo "Contains a 2.x tag\n";
}
?>
]]>
</programlisting>
<para>
This will output something like:
</para>
<screen>
<![CDATA[
Contains a 1.x tag
Contains a 1.1 tag
]]>
</screen>
</example>
</para>
<para>
If a file contains an ID3 v1.1 tag, it always contains
a 1.0 tag, as version 1.1 is just an extension of 1.0.
</para>
<para>
See also <function>id3_get_tag</function>, <function>id3_set_tag</function> and
<function>id3_remove_tag</function>.
</para>
</refsect1>
</refentry>
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