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Example code of azaharizaman/nexus-account-variance-analysis

Informations about the package nexus-account-variance-analysis

Nexus\AccountVarianceAnalysis

Framework-Agnostic Financial Variance Analysis Engine

PHP Version

Overview

Nexus\AccountVarianceAnalysis is a pure PHP package that provides the core engine for analyzing financial variances between actual results and budgets, forecasts, or prior periods. It calculates variances, identifies significant deviations, performs trend analysis, and provides attribution analysis to explain the drivers of variances.

This package is framework-agnostic and contains no database access, no HTTP controllers, and no framework-specific code. Consuming applications provide comparative data through injected interfaces.

Installation

Package Responsibilities

Responsibility Description
Variance Calculation Calculate differences between actual and budget/forecast
Significance Evaluation Determine if variances exceed materiality thresholds
Trend Analysis Identify patterns and trends over multiple periods
Attribution Analysis Break down variances into contributing factors
Statistical Analysis Provide statistical measures (std dev, moving averages)
Rolling Forecasts Update forecasts based on actual results

Key Concepts

Variance Types

Type Comparison Use Case
Budget Variance Actual vs Budget Annual/quarterly budget comparison
Forecast Variance Actual vs Forecast Rolling forecast accuracy
Prior Period Current vs Prior Period-over-period analysis
Year-over-Year Current YTD vs Prior YTD Annual trend analysis
Plan Variance Actual vs Strategic Plan Long-term goal tracking

Significance Levels

Architecture

Contracts (Interfaces)

Core Interfaces

VarianceCalculatorInterface

The main entry point for variance calculations.

TrendAnalyzerInterface

Analyzes trends across multiple periods.

SignificanceEvaluatorInterface

Evaluates whether variances are significant.

AttributionAnalyzerInterface

Breaks down variances into contributing factors.

VarianceDataProviderInterface

Contract for consuming applications to provide data.

Value Objects

VarianceResult

TrendData

SignificanceThreshold

VarianceAttribution

AccountVariance

ForecastVariance

Enums

VarianceType

VarianceStatus

TrendDirection

SignificanceLevel

Services

VarianceCalculator

Core variance calculation logic:

TrendAnalyzer

Trend analysis capabilities:

SignificanceEvaluator

Threshold evaluation:

AttributionAnalyzer

Variance attribution:

StatisticalCalculator

Statistical functions:

RollingForecastCalculator

Forecast updates:

Exceptions

Exception When Thrown
VarianceCalculationException Variance calculation fails (division by zero, etc.)
InsufficientDataException Not enough data points for trend analysis
InvalidThresholdException Threshold configuration is invalid

Usage Example

Variance Analysis Formulas

Basic Variance

Favorable/Unfavorable Logic

Account Type Over Budget Under Budget
Revenue Favorable ✅ Unfavorable ❌
Expense Unfavorable ❌ Favorable ✅
Asset Contextual Contextual
Liability Contextual Contextual

Price/Volume Analysis

Integration with Other Packages

Package Integration
Nexus\Finance Provides actual GL balances
Nexus\Budget Provides budget amounts
Nexus\FinancialStatements Variance data in statement notes
Nexus\Notifier Alert on significant variances
Nexus\AuditLogger Log variance analysis events

Related Documentation

License

MIT License - See LICENSE for details.

All versions of nexus-account-variance-analysis with dependencies

PHP Build Version
Package Version
Requires php Version ^8.3
azaharizaman/nexus-common Version dev-main
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