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Martin Pham
Martin Pham

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Try PHP 8.0 beta features with Docker / Kubernetes

#php #beta #docker #kubernetes

PHP 8.0's development had started one year ago. With many promising features like: Union types, JIT, Static return type, Weak maps, ..., probably you'd like to give it a try. Or simply, you just want to know if your codebase will run fines with future PHP version. So I've created PHP 8.0 beta Docker images for you :)

The base image martinpham/php8:fpm-alpine contains PHP 8.0 FPM, built from PHP source code, and based on Alpine Linux, so it's quite small and fast. It also supports multiple architectures (linux/amd64, linux/arm64, linux/386, linux/arm/v7, linux/arm/v6), so you can run it even on a small Raspberry Pi!

Docker

You can try to run it now:

docker run -p 9000:9000 --rm martinpham/php8:fpm-alpine
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Docker will pull the image, and creates a new container with this image, also exposes port 9000 for PHP-FPM server. (Note: The --rm option tells Docker to remove the container after it finishes).

If everything goes fine, you'd see logs from Docker:

NOTICE: fpm is running, pid 1 NOTICE: ready to handle connections
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To make sure, you could also try to send request to the PHP-FPM server:

REQUEST_METHOD=GET cgi-fcgi -bind -connect localhost:9000
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(Replace localhost with your Docker's Host IP)

PHP-FPM will respond:

X-Powered-By: PHP/8.0.0-dev Content-type: text/html; charset=UTF-8
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Everything is good! You are running your first PHP 8.0 beta - FPM server!

Kubernetes

If you were following my Kuberetes tutorial before, probably you'd like to deploy it on your Kubernetes cluster :).
Well it's very easy, here is a sample configuration, with:

  • A persistent volume (code-pvc) for storing application code
  • A config map (nginx-config) for nginx configuration
  • A deployment (app-deployment) with PHP 8 FPM server and NGINX web server
  • A service (app-service) to expose deployed pod (tagged with name: app-pod) 
## App code volume apiVersion: v1 kind: PersistentVolumeClaim metadata: name: code-pvc spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi --- ## Nginx config kind: ConfigMap apiVersion: v1 metadata: name: nginx-config data: nginx.conf: | events { } http { server { listen 80; listen [::]:80; root /var/www/html; index index.html index.htm index.php; location / { try_files $uri $uri/ =404; } location ~ \.php$ { include fastcgi_params; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass 127.0.0.1:9000; } } } --- ## App deployment apiVersion: apps/v1 kind: Deployment metadata: name: app-deployment spec: replicas: 1 strategy: type: Recreate selector: matchLabels: name: app-pod template: metadata: name: app-pod labels: name: app-pod spec: volumes: - name: app-files-volume persistentVolumeClaim: claimName: code-pvc - name: nginx-config-volume configMap: name: nginx-config containers: # php-fpm - name: phpfpm image: martinpham/php8:fpm-alpine volumeMounts: - name: app-files-volume mountPath: /var/www/html resources: limits: cpu: 100m requests: cpu: 50m # nginx - name: nginx image: nginx:alpine volumeMounts: - name: app-files-volume mountPath: /var/www/html - name: nginx-config-volume mountPath: /etc/nginx/nginx.conf subPath: nginx.conf resources: limits: cpu: 100m requests: cpu: 50m ports: - containerPort: 80 readinessProbe: httpGet: path: / port: 80 initialDelaySeconds: 3 periodSeconds: 3 successThreshold: 1 -------- ## App service apiVersion: v1 kind: Service metadata: name: app-service spec: selector: name: app-pod ports: - name: http port: 80 targetPort: 80 protocol: TCP
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Additionally, I've also built an "extra" image, called martinpham/php8:fpm-extra-alpine, which extends from the base image, with mysqli, gd, pdo_mysql and opcache extensions, so you can start to try other extensions with PHP 8.0.

PS: All images above are open-sourced, you can find it here https://github.com/MartinPham/php8-docker

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