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Package delorean
Short Description PHP Console app that downloads screenshots from the Internet Archive Wayback Machine
License MIT
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Informations about the package delorean
Coderdojo Delorean Time Machine
This PHP command line (console) app allows you to generate screenshots of websites from the past and present, courtesy of Wayback Machine by The Internet Archive.
Installation
Install this application through Composer.
If you don't have Composer installed yet, run
Once you have Composer, you can install the app an it's depencies with
Alternatively, if you prefer to clone this Git repository, you can install the dependencies only with the following (inside the app root).
Requirements
This package is designed to work with PHP >= 5.6 over the command line.
Usage
Generate Screenshots
You can generate a past and present screenshot of a specific website by using the command: php delorean screenshot <url> [--years=10]
In other words,
will generate a screenshot for the present day, plus one from the past using the default number of years (which is 10).
To change the number of years ago for the past screenshot, you can pass this as an option.
How it Works
The delorean file in the project root is a command line php script that registers a new Symfony console application, currently with one command.
The src/ScreenshotCommand.php file contains the code that is run when you put php delorean screenshot http://google.com in the command line. Have a look in this file to check the process of getting the URL and number of years. The getSnapshotUrl() method in this file connects to the Wayback Machine API to find the right URL for the past copy of the website.
The src/ScreenshotGenerator.php file contains the code that takes a screenshot. Because this is contained within it's own PHP class / file, we can re-use this in future by just including it from wherever it's needed. See Wikipedia - DRY.
Finally, this ap makes use of a number of Open-source projects. These are listed below:
- Symfony Console - Used to register a command-line app and get input from the user.
- Symfony Process - Component used to run other command line processes from our code.
- PhantomJs - A 'headless' browser that we use to load up webpages and take screenshots in our code.
- Guzzle - A great HTTP client used to 'talk' to the Wayback Machine API.
- Carbon - A simple PHP DateTime helper that makes working with timestamps super easy.
TODO
- [] Update to check if URL exists before taking past/present screenshots
- [] Add command option to only generate past screenshot (rather than present and past)
- [] New command to take multiple past screenshots at the one time
Why Delorean?
In the feature film series Back to the Future, Dr. Emmett Brown builds a time machine based on an automobile; a DeLorean DMC-12.
Futher Reading.
- Open-source packages listed above
- How to Build Command-Line Apps video series on Laracasts.com
Credits / License
Made by David Rushton, Developer at Papertank Limited Using the MIT License
All versions of delorean with dependencies
guzzlehttp/guzzle Version ~5.0
symfony/process Version ^2.7
nesbot/carbon Version ^1.20