Pptx Extractor

PHP library for extracting and replacing string data in .pptx files. Pptx files are zip archives filled with XML documents and assets. Their format is described by OOXML. This library only manipulates the ppt/slide.xml (of slide1.xml, slide2.xml) files.

Composer installation

"require": {
    "label305/pptx-extractor": "0.2.*"
}

Requirements

• PHP 8.0
• PHP ext-dom
• PHP ext-zip
• PHP ext-libxml

Basic usage

Import the basic classes.

use Label305\PptxExtractor\Basic\BasicExtractor;
use Label305\PptxExtractor\Basic\BasicInjector;

First we need to extract all the contents from an existing pptx file. This can be done using the BasicExtractor. Calling extractStringsAndCreateMappingFile will create a new file which name you pass in the second argument. This new file contains references so the library knows where to later inject the altered text back into.

$extractor = new BasicExtractor();
$mapping = $extractor->extractStringsAndCreateMappingFile(
    'simple-slides.pptx',
    'simple-slides-extracted.pptx'
  );

Now that you have extracted contents you can inspect the content of the resulting $mapping array. And if you wish to change the content you can simply modify it. The array key maps to a symbol in the simple-slides-extracted.pptx.

echo $mapping[0][0]; // Slide number one

Now after you changed your content, you can save it back to a new file. In this case that file is simple-slides-injected.pptx.

$mapping[0][0] = "Slide number one";

$injector = new BasicInjector();
$injector->injectMappingAndCreateNewFile(
    $mapping,
    'simple-slides-extracted.pptx',
    'simple-slides-injected.pptx'
  );

Advanced usage

The library is also equiped with a DecoratedTextExtractor and DecoratedTextInjector with which you can manipulate basic paragraph styling like bold, italic and underline. You can also use the SharedString objects to distinguish logical groupings of text.

$extractor = new DecoratedTextExtractor();
$mapping = $extractor->extractStringsAndCreateMappingFile(
    'markup.pptx',
    'markup-extracted.pptx'
  );
  
$firstParagraph = $mapping[0]; // Paragraph object
$$firstTextRun = $firstParagraph[0]; // TextRun object

$firstTextRun->italic = true;
$firstTextRun->bold = false;
$firstTextRun->underline = true;

echo $firstTextRun->text; // The quick brown fox jumps over the lazy dog
$firstTextRun->text = "Several fabulous dixieland jazz groups played with quick tempo.";

$injector = new DecoratedTextInjector();
$injector->injectMappingAndCreateNewFile(
    $mapping,
    'markup-extracted.pptx',
    'markup-injected.pptx'
  );

License

Copyright 2020 Label305 B.V.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.