Guides

PHP

This guide explains how to create and deploy a simple PHP-based HTTP web server. To run this example, follow these steps:

1. Install the kraft CLI tool and a container runtime engine, for example Docker.

2. Clone the examples repository and cd into the examples/http-php8.2/ directory:

Code(bash)
 
git clone https://github.com/kraftcloud/examples
cd examples/http-php8.2/

Make sure to log into Unikraft Cloud by setting your token and a metro close to you. This guide uses fra (Frankfurt, 🇩🇪):

Code(bash)
 
# Set Unikraft Cloud access token
export UKC_TOKEN=token
# Set metro to Frankfurt, DE
export UKC_METRO=fra

When done, invoke the following command to deploy this app on Unikraft Cloud:

Code(bash)
 
kraft cloud deploy -p 443:8080 .

The output shows the instance address and other details:

Code(ansi)
 
[●] Deployed successfully!
 │
 ├────────── name: http-php82-g00si
 ├────────── uuid: 033b2f4b-72ff-414d-b0de-63571477c657
 ├───────── state: running
 ├─────────── url: https://aged-fire-rh0oi0tj.fra.unikraft.app
 ├───────── image: http-php82@sha256:dccaac053982673765b8f00497a9736c31458ab23ad59a550b09aa8dedfabb34
 ├───── boot time: 32.80 ms
 ├──────── memory: 128 MiB
 ├─────── service: aged-fire-rh0oi0tj
 ├── private fqdn: http-php82-g00si.internal
 ├──── private ip: 172.16.3.3
 └────────── args: /usr/local/bin/php /usr/src/server.php

In this case, the instance name is http-php82-g00si and the address is https://aged-fire-rh0oi0tj.fra.unikraft.app. They're different for each run.

Use curl to query the Unikraft Cloud instance of the PHP-based HTTP web server:

Code(bash)
 
curl https://aged-fire-rh0oi0tj.fra.unikraft.app

Code(text)
 
Hello, World!

You can list information about the instance by running:

Code(bash)
 
kraft cloud instance list

Code(text)
 
NAME              FQDN                                STATE    CREATED AT      IMAGE                                   MEMORY   ARGS                                    BOOT TIME
http-php82-g00si  aged-fire-rh0oi0tj.fra.unikraft.app  running  50 seconds ago  http-php82@sha256:dccaac05398267376...  256 MiB  /usr/local/bin/php /usr/src/server.php  32801us

When done, you can remove the instance:

Code(bash)
 
kraft cloud instance remove http-php82-g00si

Customize your app

To customize the app, update the files in the repository, listed below:

• server.php: the actual PHP HTTP server
• php.ini: the PHP configuration
• Kraftfile: the Unikraft Cloud specification
• Dockerfile: the Docker-specified app filesystem

The following options are available for customizing the app:

• If you only update the implementation in the server.php source file, you don't need to make any other changes.

• If you create any new source files, copy them into the app filesystem by using the COPY command in the Dockerfile. If you need new extensions, that may require updating the php.ini file.

• More extensive changes may require extending the Dockerfile (see Dockerfile syntax reference).

Learn more

Use the --help option for detailed information on using Unikraft Cloud:

Code(bash)
 
kraft cloud --help

Or visit the CLI Reference.