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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 1.3 $ -->
<refentry xml:id="phar.buildfromiterator" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>Phar::buildFromIterator</refname>
<refpurpose>Construct a phar archive from an iterator.</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>Phar::buildFromIterator</methodname>
<methodparam><type>Iterator</type><parameter>iter</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>base_directory</parameter></methodparam>
</methodsynopsis>
&phar.write;
<para>
Populate a phar archive from an iterator. Two styles of iterators are supported,
iterators that map the filename within the phar to the name of a file on disk,
and iterators like DirectoryIterator that return
SplFileInfo objects. For iterators that return SplFileInfo objects, the second
parameter is required.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>A <function>Phar::buildFromIterator</function> with SplFileInfo</title>
<para>
For most phar archives, the archive will reflect an actual directory layout, and
the second style is the most useful. For instance, to create a phar archive
containing the files in this sample directory layout:
</para>
<para>
<screen>
<![CDATA[
/path/to/project/
config/
dist.xml
debug.xml
lib/
file1.php
file2.php
src/
processthing.php
www/
index.php
cli/
index.php
]]>
</screen>
</para>
<para>
This code could be used to add these files to the "project.phar" phar archive:
</para>
<para>
<programlisting role="php">
<![CDATA[
<?php
// create with alias "project.phar"
$phar = new Phar('project.phar', 0, 'project.phar');
$phar->buildFromIterator(
new RecursiveIteratorIterator(
new RecursiveDirectoryIterator('/path/to/project')),
'/path/to/project');
$phar->setStub($phar->createDefaultWebStub('cli/index.php', 'www/index.php'));
?>
]]>
</programlisting>
</para>
<para>
The file project.phar can then be used immediately. <function>buildFromIterator</function> does not
set values such as compression, metadata, and this can be done after creating the
phar archive.
</para>
<para>
As an interesting note, <function>buildFromIterator</function> can also be used to
copy the contents of an existing phar archive, as the Phar object descends
from <classname>DirectoryIterator</classname>:
</para>
<para>
<programlisting role="php">
<![CDATA[
<?php
// create with alias "project.phar"
$phar = new Phar('project.phar', 0, 'project.phar');
$phar->buildFromIterator(
new RecursiveIteratorIterator(
new Phar('/path/to/anotherphar.phar')),
'phar:///path/to/anotherphar.phar/path/to/project');
$phar->setStub($phar->createDefaultWebStub('cli/index.php', 'www/index.php'));
?>
]]>
</programlisting>
</para>
</example>
<example>
<title>A <function>Phar::buildFromIterator</function> with other iterators</title>
<para>
The second form of the iterator can be used with any iterator that returns
a key => value mapping, such as an <classname>ArrayIterator</classname>:
</para>
<para>
<programlisting role="php">
<![CDATA[
<?php
// create with alias "project.phar"
$phar = new Phar('project.phar', 0, 'project.phar');
$phar->buildFromIterator(
new ArrayIterator(
array(
'internal/file.php' => dirname(__FILE__) . '/somefile.php',
'another/file.jpg' => fopen('/path/to/bigfile.jpg', 'rb'),
)));
$phar->setStub($phar->createDefaultWebStub('cli/index.php', 'www/index.php'));
?>
]]>
</programlisting>
</para>
</example>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>iter</parameter></term>
<listitem>
<para>
Any iterator that either associatively maps phar file to location or
returns SplFileInfo objects
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>base_directory</parameter></term>
<listitem>
<para>
For iterators that return SplFileInfo objects, the portion of each
file's full path to remove when adding to the phar archive
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
<function>buildFromIterator</function> returns an associative array
mapping internal path of file to the full path of the file on the
filesystem.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
This method returns <classname>UnexpectedValueException</classname> when the
iterator returns incorrect values, such as an integer key instead of a
string, a <classname>BadMethodCallException</classname> when an
SplFileInfo-based iterator is passed without a <parameter>base_directory</parameter>
parameter, or a <classname>PharException</classname> if there were errors
saving the phar archive.
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>Phar::buildFromDirectory</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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