5 PHP Features You're Probably Not Using (But Should)

These aren't obscure tricks. They're tools that ship with modern PHP — and once you start using them, you'll wonder how you lived without them.

1. Generators — Process 1 Million Rows with Almost Zero Memory

Here's a scenario every backend developer has faced: you need to read a large CSV file, process it row by row, and do something with the data. The instinct is to load everything into an array first.

That instinct will kill your server.