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# PharData::buildFromIterator

(No version information available, might be only in CVS)

PharData::buildFromIterator — Construct a tar or zip archive from an iterator.

### Description

array PharData::buildFromIterator ( Iterator `$iter` [, string `$base_directory` ] )

Populate a tar or zip archive from an iterator. Two styles of iterators are supported, iterators that map the filename within the tar/zip 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.

### Examples

Example#1 A PharData::buildFromIterator() with SplFileInfo

For most tar/zip archives, the archive will reflect an actual directory layout, and the second style is the most useful. For instance, to create a tar/zip archive containing the files in this sample directory layout:

    /path/to/project/
                     config/
                            dist.xml
                            debug.xml
                     lib/
                         file1.php
                         file2.php
                     src/
                         processthing.php
                     www/
                         index.php
                     cli/
                         index.php

This code could be used to add these files to the "project.tar" tar archive:

`<?php
$phar = new PharData('project.tar');
$phar->buildFromIterator(
new RecursiveIteratorIterator(
new RecursiveDirectoryIterator('/path/to/project')),
'/path/to/project');
?>`

The file project.tar can then be used immediately. buildFromIterator() does not set values such as compression, metadata, and this can be done after creating the tar/zip archive.

As an interesting note, buildFromIterator() can also be used to copy the contents of an existing phar, tar or zip archive, as the PharData object descends from DirectoryIterator:

`<?php
$phar = new PharData('project.tar');
$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'));
?>`

Example#2 A PharData::buildFromIterator() with other iterators

The second form of the iterator can be used with any iterator that returns a key => value mapping, such as an ArrayIterator:

`<?php
$phar = new PharData('project.tar');
$phar->buildFromIterator(
new ArrayIterator(
array(
'internal/file.php' => dirname(__FILE__) . '/somefile.php',
'another/file.jpg' => fopen('/path/to/bigfile.jpg', 'rb'),
)));
?>`

### Parameters

`iter`

  Any iterator that either associatively maps tar/zip file to location or returns SplFileInfo objects

`base_directory`

  For iterators that return SplFileInfo objects, the portion of each file's full path to remove when adding to the tar/zip archive

### Return Values

buildFromIterator() returns an associative array mapping internal path of file to the full path of the file on the filesystem.

### Errors/Exceptions

This method returns UnexpectedValueException when the iterator returns incorrect values, such as an integer key instead of a string, a BadMethodCallException when an SplFileInfo-based iterator is passed without a `base_directory` parameter, or a PharException if there were errors saving the phar archive.

### See Also

- Phar::buildFromIterator()

PharData
PharData::compressAllFilesBZIP2
PharData
PHP Manual