Libraries tagged by calculation

All the standard citizens for the basic variable types php provides

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This library provides classes and functions for the computation of geometric data on the surface of the Earth. Code ported from the Google Maps Javascript API v3

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EU VAT calculation, the way it should be.

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Client library for Avalara's AvaTax suite of business tax calculation and processing services. Uses the REST v2 API. Updated to use Guzzle 7 for Laravel compatibility.

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Library for calculating holidays

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PHP class to determines shipping fee based on origin latitude and lonitude of customer from business location.

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PHP class to check the similarity between two items

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a library for advance date time formatting and calculation

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Basic hash library

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A simple way to accommodate, exchange and structorize data with objects

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Landed Cost API providing duty rates, calculation, and item harmonization. A set of sample requests are available as a [Postman Collection](https://www.getpostman.com/collections/ad308f6c9351a18c2c12). ## Basics ### Timestamps Timestamps should be formatted using ISO-8601 to the nearest second, in UTC e.g `2015-06-12T09:17:37Z` ### Expiries All Requests will have an associated timestamp. The validity for any request is 1 minute to account for any clock-skew. ## Authorization All API requests require an http header that contains your account ID and your account API Key. During account provisioning, you will be issued an API Key which you must supply with every request. ### Authorization Header To make an authorized API request, set the following HTTP header: `authorization: avalaraapikey id: key:`

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A PHP library for integrating with the Google Distance Matrix API in WordPress, providing travel distance and time calculations between multiple origins and destinations. Features WordPress transient caching and WP_Error support.

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AfterSalesPro.gr Shipping Module

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Library for the calculation of simple math expressions

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