Serverless computing has taken web development by storm, and Google has recently updated their Google Cloud Functions to support PHP 7.4! We'll walk through setting up a function and how it all works.

1. @dragonmantank
Using PHP
Functions!
(not those functions, Google Cloud
Functions)
PRESENTED BY:
Chris Tankersley
Senior PHP Developer Advocate
@dragonmantank

2. @dragonmantank
What are Serverless Functions?

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What are is Serverless
Functions?

4. @dragonmantank Traditional PHP Application
Web Server

5. @dragonmantank Traditional PHP Application
Web Server Your PHP Code

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A Server
Traditional PHP Application
Web Server Your PHP Code

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A Server
Traditional PHP Application
Web Server Microservice
A Server
Web Server Microservice
A Server
Web Server Microservice

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$$$$$$$$$$

9. @dragonmantank Serverless
Your PHP Code

10. @dragonmantank Serverless
The Cloud
Your PHP Code

11. @dragonmantank Serverless
Your PHP Code

12. @dragonmantank Serverless
Your PHP Code
Your PHP Code
Your PHP Code
Your PHP Code
Your PHP Code
Your PHP Code
Your PHP Code

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$$$

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What are Serverless Functions?

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Function
Dictionary Time
A piece of code that takes
one or more inputs,
processes some logic,
and may or may not
return a value

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Functions
Example Time
// Top level functions
function add(
int $one, int $two
) {
return $one + $two;
}
// Variable functions
$func = function(
int $one, int $two
) {
return $one + $two;
}

17. @dragonmantank
Functions
Example Time
// Top level functions
function add(
int $one, int $two
) {
return $one + $two;
}
// Variable functions
$func = function(
int $one, int $two
) {
return $one + $two;
}

18. @dragonmantank
What are Serverless Functions?

19. @dragonmantank Serverless
Your PHP Function
Your PHP Function
Your PHP Function
Your PHP Function
Your PHP Function
Your PHP Function
Your PHP Function

20. @dragonmantank
Google Cloud Functions
Newest kid on the block

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Create a New Project
$ gcloud projects create php-oxford-9181984

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Create a New Project

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Create a New Function

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Configure a New Function

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Configure a New Function

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Configure a New Function

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Function Editor

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Enable Cloud Build API

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Edit Function

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Edit Function

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Edit Function

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Deploying Function

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Accessing the Function
$ gcloud functions describe hello-world

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Accessing the Function

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It Works!

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What Makes This Tick?

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What makes
up a function?
● index.php
● Entry Method
● composer.json

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What Makes This Tick?
$ mkdir php-oxford
$ cd php-oxford
$ composer require
google/cloud-functions-framework

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index.php

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index.php

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Test Locally
$ FUNCTION_TARGET=main
php -S localhost:8080
vendor/bin/router.php

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Test Locally
$ FUNCTION_TARGET=main
php -S localhost:8080
vendor/bin/router.php

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Test Locally
$ FUNCTION_TARGET=main
php -S localhost:8080
vendor/bin/router.php

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Test Locally
$ FUNCTION_TARGET=main
php -S localhost:8080
vendor/bin/router.php

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Check it out

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

53. @dragonmantank
Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Deploying
$ gcloud functions deploy
local-oxford
/-entry-point main
/-runtime=php74
/-trigger-http
/-allow-unauthenticated
/-security-level=secure-always

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Check it out

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Check it out

60. @dragonmantank
Something a bit more real-world
Demo Time

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Deploying
$ composer require
vonage/client
lcobucci/jwt:^3.4

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Write an Answer Webhook

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Write an Answer Webhook

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Write an Answer Webhook

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Deploying

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Deploying
$ vonage app:update
4ec8b8c1-4ba0-4644-bd8f-173d85ce2b40
/-voice_answer_url=https://us-central1-php-oxford-9
181984.cloudfunctions.net/oxford-demo

67. @dragonmantank
Deploying
$ vonage app:update
4ec8b8c1-4ba0-4644-bd8f-173d85ce2b40
/-voice_answer_url=https://us-central1-php-oxford-9
181984.cloudfunctions.net/oxford-demo

68. @dragonmantank
Deploying
$ vonage app:update
4ec8b8c1-4ba0-4644-bd8f-173d85ce2b40
/-voice_answer_url=https://us-central1-php-oxford-9
181984.cloudfunctions.net/oxford-demo

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Deploying
$ vonage app:update
4ec8b8c1-4ba0-4644-bd8f-173d85ce2b40
/-voice_answer_url=https://us-central1-php-oxford-9
181984.cloudfunctions.net/oxford-demo

70. @dragonmantank
Try Calling
UK: (+44) 7520645746
US: (+1) 8003819125

71. @dragonmantank
Resources
● General Documentation
https://cloud.google.com/appengine/docs/standard/php7/runtime
● Service Information
https://cloud.google.com/functions

72. 72
Chris Tankersley
Senior PHP Developer Advocate
at Vonage
@dragonmantank
chris.tankersley@vonage.com