Tech tips

• Command · Beginner

  Servers & setup

  Install a PHP extension (intl, gd, zip…) on Ubuntu or Docker

  Your app shows “Class "Normalizer" not found” or complains about a missing PHP extension.

  • Bash / terminal
  • Dockerfile
• Best practice · Intermediate

  Object-oriented programming

  OOP: favour composition over inheritance

  Your classes inherit from each other over several levels and every new feature forces yet another subclass.

  • TypeScript
  • PHP
  • Python
• Best practice · Beginner

  Best practices

  Never store a password in plain text: hash it with Argon2

  Your users' passwords are stored in plain text, MD5 or SHA-1: if the database leaks, they can be used right away.

  • PHP
  • TypeScript
  • Python

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