<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="phardata.copy" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>PharData::copy</refname>
  <refpurpose>Copy a file internal to the phar archive to another new file within the phar</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="PharData">
   <modifier>public</modifier> <type>bool</type><methodname>PharData::copy</methodname>
   <methodparam><type>string</type><parameter>from</parameter></methodparam>
   <methodparam><type>string</type><parameter>to</parameter></methodparam>
  </methodsynopsis>

  <para>
   Copy a file internal to the tar/zip archive to another new file within the same archive.
   This is an object-oriented alternative to using <function>copy</function> with
   the phar stream wrapper.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>from</parameter></term>
     <listitem>
      <para>
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>to</parameter></term>
     <listitem>
      <para>
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>

 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   returns &true; on success, but it is safer to encase method call in a
   try/catch block and assume success if no exception is thrown.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   throws <classname>UnexpectedValueException</classname> if the source file does not
   exist, the destination file already exists, write access is disabled, opening either
   file fails, reading the source file fails, or a <classname>PharException</classname>
   if writing the changes to the phar fails.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>A <function>PharData::copy</function> example</title>
    <para>
     This example shows using <function>PharData::copy</function> and the
     equivalent stream wrapper performance of the same thing.  The primary
     difference between the two approaches is error handling.  All PharData methods
     throw exceptions, whereas the stream wrapper uses <function>trigger_error</function>.
    </para>
    <programlisting role="php">
<![CDATA[
<?php
try {
    $phar = new PharData('myphar.tar');
    $phar['a'] = 'hi';
    $phar->copy('a', 'b');
    echo $phar['b']; // outputs "phar://myphar.tar/b"
} catch (Exception $e) {
    // handle error
}

// the stream wrapper equivalent of the above code.
// E_WARNINGS are triggered on error rather than exceptions.
copy('phar://myphar.tar/a', 'phar//myphar.tar/c');
echo file_get_contents('phar://myphar.tar/c'); // outputs "hi"
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

</refentry>
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