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<refentry xml:id="phardata.converttodata" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>PharData::convertToData</refname>
  <refpurpose>Convert a phar archive to a non-executable tar or zip file</refpurpose>
 </refnamediv>


 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="PharData">
   <modifier>public</modifier> <type class="union"><type>PharData</type><type>null</type></type><methodname>PharData::convertToData</methodname>
   <methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>format</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>compression</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>extension</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>

  <para>
   This method is used to convert a non-executable tar or zip archive to another
   non-executable format.
  </para>
  <para>
   If no changes are specified, this method throws a <classname>BadMethodCallException</classname>.
   This method should be used to convert a tar archive to zip format or vice-versa.  Although
   it is possible to simply change the compression of a tar archive using this method,
   it is better to use the <function>PharData::compress</function> method for logical
   consistency.
  </para>
  <para>
   If successful, the method creates a new archive on disk and returns a <classname>PharData</classname>
   object.  The old archive is not removed from disk, and should be done manually after
   the process has finished.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>format</parameter></term>
     <listitem>
      <para>
       This should be one of <literal>Phar::TAR</literal>
       or <literal>Phar::ZIP</literal>.  If set to &null;, the existing file format
       will be preserved.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>compression</parameter></term>
     <listitem>
      <para>
       This should be one of <literal>Phar::NONE</literal> for no whole-archive
       compression, <literal>Phar::GZ</literal> for zlib-based compression, and
       <literal>Phar::BZ2</literal> for bzip-based compression.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>extension</parameter></term>
     <listitem>
      <para>
       This parameter is used to override the default file extension for a
       converted archive.  Note that <literal>.phar</literal> cannot be used
       anywhere in the filename for a non-executable tar or zip archive.
      </para>
      <para>
       If converting to a tar-based phar archive, the
       default extensions are <literal>.tar</literal>, <literal>.tar.gz</literal>,
       and <literal>.tar.bz2</literal> depending on specified compression.
       For zip-based archives, the
       default extension is <literal>.zip</literal>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>

 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The method returns a <classname>PharData</classname> object on success,
   or &null; on failure.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   This method throws <classname>BadMethodCallException</classname> when unable
   to compress, an unknown compression method has been specified, the requested
   archive is buffering with <function>Phar::startBuffering</function> and
   has not concluded with <function>Phar::stopBuffering</function>, and a
   <classname>PharException</classname> if any problems are encountered
   during the phar creation process.
  </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>format</parameter>, <parameter>compression</parameter>, and <parameter>extension</parameter> are now nullable.
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>A <function>PharData::convertToData</function> example</title>
    <para>
     Using PharData::convertToData():
    </para>
    <programlisting role="php">
<![CDATA[
<?php
try {
    $tarphar = new PharData('myphar.tar');
    // note that myphar.tar is *not* unlinked
    // convert it to the non-executable tar file format
    // creates myphar.zip
    $zip = $tarphar->convertToData(Phar::ZIP);
    // create myphar.tbz
    $tgz = $zip->convertToData(Phar::TAR, Phar::BZ2, '.tbz');
    // creates myphar.phar.tgz
    $phar = $tarphar->convertToData(Phar::PHAR); // throws exception
} catch (Exception $e) {
    // handle the error here
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>Phar::convertToExecutable</function></member>
    <member><function>Phar::convertToData</function></member>
    <member><function>PharData::convertToExecutable</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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