Collections

Data Types

  • ext-ds: Data Structures, a standard extension worth mentioning. Common data structures like Set, Queue, and Map.

Dependency Injection

  • PHP-DI: The best IMHO DI for PHP

Http

Parsers

  • sabre/xml: very useful XMLReader / XMLWriter wrapper

  • yosymfony/toml: TOML parser, unfortunately, outdated

  • OpenSpout: Streaming spreadsheet parser and writer (XLSX, ODS, CSV)