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What does Composer's autoload PSR-4 mapping do?

  1. A Loads all files at startup
  2. B Maps namespace prefixes to directories so classes load on demand
  3. C Compiles PHP to bytecode
  4. D Downloads dependencies at runtime
Answer

Maps namespace prefixes to directories so classes load on demand

Class names must match filenames exactly including case, which is why code can work on macOS and fail on a Linux server.

All Php MCQs

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