Learnings Building Alexa Skills with PHP
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Ralf Eggert discusses his experience building two Alexa skills using PHP. He describes the technical setup using a custom PHP library and external endpoint server rather than AWS Lambda due to lack of native PHP support. He outlines the development process for each skill, including intents, utterances, certification, and lessons learned. Key challenges included complex voice user interfaces and incomplete custom slot types. Ralf concludes with recommendations such as starting simply, testing thoroughly, and designing sophisticated voice interactions.
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Learnings Building Alexa Skills with PHP
- 1. Learnings fromLearnings from Building Alexa Skills with PHPBuilding Alexa Skills with PHP
- 2. Ralf EggertRalf Eggert CEO Travello GmbH, Programming since 29 years,CEO Travello GmbH, Programming since 29 years, Trainer, Author, Coach DeveloperTrainer, Author, Coach Developer
- 3. Ralf EggertRalf Eggert 33 fromfrom 2525 AgendaAgenda My First Alexa Skill My LearningsMy Second Alexa SkillMy Second Alexa Skill My Tech Stack
- 4. My Tech StackMy Tech Stack
- 5. Ralf EggertRalf Eggert 55 fromfrom 2525 Basic Technology SetupBasic Technology Setup
- 6. Ralf EggertRalf Eggert 66 fromfrom 2525 PHP on AWS Lambda?PHP on AWS Lambda? https://goo.gl/N9VVvb
- 7. Ralf EggertRalf Eggert 77 fromfrom 2525 Why use own end-point server?Why use own end-point server? No native PHP support on AWS Lambda functions Need to compile PHP and use a Node.js wrapper More complicated than a plain old LAMP server
- 8. Ralf EggertRalf Eggert 88 fromfrom 2525 My open-source PHP libraryMy open-source PHP library https://github.com/travello-gmbh/
- 9. My First Alexa SkillMy First Alexa Skill
- 10. Ralf EggertRalf Eggert 1010 fromfrom 2525 The ideaThe idea
- 11. Ralf EggertRalf Eggert 1111 fromfrom 2525 How it worksHow it works Alexa! Start GUEST reception! I am very pleased That guests are here! Say hello to Ella Nice to see you Ella. Your hair colour really fits together with our Pillow cases. Please welcome Martha Where on earth have you Been such a long time Martha? Thanks Alexa I was delighted to meet you Ella And Martha!
- 12. Ralf EggertRalf Eggert 1212 fromfrom 2525 Early successEarly success Top 10 of activated Skills from March till today 60 customer reviews so far July 2017: - 22.000 customers - 54.000 Sessions - 460.000 Utterances
- 13. My Second Alexa SkillMy Second Alexa Skill
- 14. Ralf EggertRalf Eggert 1414 fromfrom 2525 The ideaThe idea
- 15. Ralf EggertRalf Eggert 1515 fromfrom 2525 How it worksHow it works Alexa! Start boredom killer I am very pleased to fight your boredom! Answering the Questions. How many are you? How old are you? Creativity, entertainment, gaming, movement, home or whatever? Next one please! First suggestion: Make Photo-Shooting! Thanks I will do that. Second suggestion: Make a forest Olympiad!
- 17. Ralf EggertRalf Eggert 1717 fromfrom 2525 Biggest ChallengesBiggest Challenges Custom slot type for category needed too many synonyms VUI was much more complex While updating one skil a Small risk to break other skills Slot type for German first names incomplete Signature Validation (no problem on AWS Lambda) Setup second end-point server (for testing)
- 18. Ralf EggertRalf Eggert 1818 fromfrom 2525 Some numbersSome numbers 15 custom intents 3 custom slot types 185 defined Utterances 100 suggestions 4 custom intents 1 extended slot type 34 defined utterances 100 greeting phrases
- 19. Ralf EggertRalf Eggert 1919 fromfrom 2525 Certification processCertification process 16 hours to go live (July 2017) 0 Issues 17 hours to go live after re-submitting 7 days for first feedback (February 2017) 3 Issues: - Signature validation - Single-word invocation - No response on »abbrechen« 23 hours to go live after re-submit
- 20. Ralf EggertRalf Eggert 2020 fromfrom 2525 DevelopmentDevelopment 15 working days total 10% time spent on infrastructure code 90% time spent on skill code 10 working days total 80% time spent on infrastructure code 20% time spent on skill code
- 21. Ralf EggertRalf Eggert 2121 fromfrom 2525 LearningsLearnings 1) Start with a very simple skill 2) Write a solid code base for infrastructure code or use an OS one 3) Test thoroughly (use Postman, unit tests and ASK beta test) 4) Do not trust the built-in slot types blindly (extend them) 5) Design a sophisticated voice user interface (VUI) 6) Build more than one skill 7) Have fun
- 23. Thanks!Thanks! Contact ralf@travello.audioContact ralf@travello.audio Web www.travello.audioWeb www.travello.audio
- 25. Ralf EggertRalf Eggert 2525 fromfrom 2525 Photo creditsPhoto credits Entertainment Nation Wandering Wings Acoustic Folk Band Flickr CC BY 2.0 Jules Minus Bored Flickr CC BY 2.0