Aug 22, 2026 · Backend Development

Avoid Floating‑Point Errors in PHP Money Calculations with TypePHP’s Decimal Types

This article explains how PHP's floating‑point precision pitfalls can be eliminated by using TypePHP's built‑in high‑precision types—Decimal, BigInt, and BigFloat—through a complete order‑total example, detailed type‑system overview, inference rules, conversion methods, and performance‑critical tips.

BigIntDecimalHigh-Precision Arithmetic

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Avoid Floating‑Point Errors in PHP Money Calculations with TypePHP’s Decimal Types