View GitHub Repository loan-amount-calculator

Schedule Inspection
Subscribe
Passed
Pull Request — master (#4)
by Kauri
02:33
created

AnnuityPaymentAmountCalculator::getPaymentAmount()   A

↳ Parent: AnnuityPaymentAmountCalculator

Complexity

Conditions 2
Paths 2

Size

Total Lines 11
Code Lines 7

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 6
CRAP Score 2

Importance

Changes 0
Metric Value
dl 0
loc 11
ccs 6
cts 6
cp 1
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 7
nc 2
nop 3
crap 2
1 
<?php
2 

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    3
                

                                    
                                                    
                
                
                
declare(strict_types = 1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    4
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    5
                

                                    
                                                    
                
                
                
namespace Kauri\Loan\PaymentAmountCalculator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    6
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    7
                

                                    
                                                    
                
                
                
use Kauri\Loan\PaymentAmountCalculatorInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    8
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    9
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    10
                

                                    
                                                    
                
                
                
class AnnuityPaymentAmountCalculator implements PaymentAmountCalculatorInterface

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    11
                

                                    
                                                    
                
                
                
{

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    12
                

                                    
                                                    
                
                
                
    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    13
                

                                    
                                                    
                
                
                
     * @see http://www.financeformulas.net/Annuity_Payment_Formula.html

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    14
                

                                    
                                                    
                
                
                
     * @param float $presentValue

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    15
                

                                    
                                                    
                
                
                
     * @param float $ratePerPeriod

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    16
                

                                    
                                                    
                
                
                
     * @param float $numberOfPeriods

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    17
                

                                    
                                                    
                
                
                
     * @return float

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
                    18
                

                                    
                                                    
                
                
                
     */

            


            
                                                        
            
                                    
            
            

                
                    19
                

                                    
                             9                         
                
                
                
    public function getPaymentAmount(float $presentValue, float $ratePerPeriod, float $numberOfPeriods): float

            


            
                                                        
            
                                    
            
            

                
                    20
                

                                    
                                                    
                
                
                
    {

            


            
                                                        
            
                                    
            
            

                
                    21
                

                                    
                             9                         
                
                
                
        if ($ratePerPeriod > 0) {

            


            
                                                        
            
                                    
            
            

                
                    22
                

                                    
                             5                         
                
                
                
            $payment = (($ratePerPeriod / 100) * $presentValue) / (1 - pow(1 + ($ratePerPeriod / 100),

            


            
                                                        
            
                                    
            
            

                
                    23
                

                                    
                             5                         
                
                
                
                        -$numberOfPeriods));

            


            
                                                        
            
                                    
            
            

                
                    24
                

                                    
                                                    
                
                
                
        } else {

            


            
                                                        
            
                                    
            
            

                
                    25
                

                                    
                             4                         
                
                
                
            $payment = $presentValue / $numberOfPeriods;

            


            
                                                        
            
                                    
            
            

                
                    26
                

                                    
                                                    
                
                
                
        }

            


            
                                                        
            
                                    
            
            

                
                    27
                

                                    
                                                    
                
                
                

            


            
                                                        
            
                                    
            
            

                
                    28
                

                                    
                             9                         
                
                
                
        return $payment;

            


            
                                                        
            
                                    
            
            

                
                    29
                

                                    
                                                    
                
                
                
    }

            


            
                                                        
            
                                    
            
            

                
                    30
                

                                    
                                                    
                
                
                
}

            


            
                                                        
            
                                    
            
            

                
                    31