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This article explains PHP's round() function, covering its basic usage, optional precision and rounding mode parameters, and provides multiple code examples demonstrating rounding of positive, negative, and specially‑mode‑controlled numbers.
This article explains PHP's abs() absolute‑value function, covering its syntax, basic integer and floating‑point examples, precision issues with very small numbers, and how to combine it with round() to obtain accurate results, while noting its limitation to numeric types.
This tutorial demonstrates three PHP techniques—round(), sprintf(), and number_format()—to format numbers with exactly two decimal places, explains the number_format() function syntax and parameters, and provides practical examples for displaying product prices with customizable decimal points and thousand separators.