php-doc-en/reference/phar/PharData/copy.xml

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<?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>
<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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