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PHP union types

PHP reference for php union types.

Syntax

function parseId(int|string $value): int {
  return (int) $value;
}

Examples

PHP union types example

A focused example you can adapt while practising.

function parseId(int|string $value): int {
  return (int) $value;
}

Best practices

  • Start with the smallest working example, then adapt it to your project.
  • Use the language’s standard library and idioms before introducing extra dependencies.

Runtime & versions

PHP runtime on a server or CLI. Feature availability depends on the language and runtime version used by your project; consult the official reference below.

PHP Manual

Specifications & further reading