Fix numeric input handling and update docs

Author: ngekoding

README.md

@@ -51,21 +51,27 @@ echo Terbilang::convert('12345,67'); // Outputs: "dua belas ribu tiga ratus empa
 echo Terbilang::convert('12345,25', true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah dua puluh lima sen"
 ```
 
+**Note:** Will affected only for string input.
+
 ### Advanced Usage
 
 You can use either numeric or string inputs, but there are some important considerations when dealing with decimals.
 
-When using numeric input, trailing zeros after the decimal point are not preserved.  
-For example, the number `12345.500` will be presented as `12345.5`.
+For **regular numbers**, when using numeric input, trailing zeros after the decimal point are not preserved. For example, the number `12345.500` will be presented as `12345.5`.
+
+Especially for **currency amounts**, two decimal places are always used to adhere to rupiah standards.
 
-To handle the entire decimal number (including trailing zeros), use string input.
+To handle the entire input number, including trailing zeros after the decimal point, use string input.
 
 ```php
 echo Terbilang::convert(12345.50); // Outputs: "dua belas ribu tiga ratus empat puluh lima koma lima"
 echo Terbilang::convert('12345.50'); // Outputs: "dua belas ribu tiga ratus empat puluh lima koma lima nol"
+echo Terbilang::convert('12345.500'); // Outputs: "dua belas ribu tiga ratus empat puluh lima koma lima nol nol"
 
-echo Terbilang::convert(12345.50, true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima sen"
-echo Terbilang::convert('12345.50', true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima puluh sen"
+echo Terbilang::convert(12345.5, true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima puluh sen"
+echo Terbilang::convert(12345.50, true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima puluh sen"
+echo Terbilang::convert(12345.505, true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima puluh satu sen"
+echo Terbilang::convert('12345.500', true); // Outputs: "dua belas ribu tiga ratus empat puluh lima rupiah lima ratus sen"
 ```
 
 Additionally, with string input, you can easily pass already formatted numbers.

src/Terbilang.php

@@ -57,14 +57,8 @@ public static function convertRegulerNumber($number, $decimalSeparator = null)
             $number = Helper::digitsOnly($numberParts[0]);
             $decimal = isset($numberParts[1]) ? Helper::digitsOnly($numberParts[1]) : null;
         } else {
-            /**
-             * Convert $number to string and keep all the characters
-             * The zero suffix at the decimal will be ignored
-             */
-            $number = number_format($number, max(0, strlen(strchr($number, '.')) - 1), '.', '');
-
             // Separate integer and decimal parts
-            $numberParts = explode($decimalSeparator, $number);
+            $numberParts = explode('.', $number);
             $number = intval($numberParts[0]);
             $decimal = isset($numberParts[1]) ? intval($numberParts[1]) : null;
         }
@@ -109,7 +103,7 @@ public static function convertCurrencyNumber($number, $decimalSeparator = null)
             $number = number_format($number, 2, '.', '');
 
             // Separate integer and decimal parts
-            $numberParts = explode($decimalSeparator, $number);
+            $numberParts = explode('.', $number);
             $number = intval($numberParts[0]);
             $decimal = isset($numberParts[1]) ? intval($numberParts[1]) : null;
         }

tests/CurrencyNumberTest.php

@@ -49,7 +49,9 @@ public function dataProvider()
             [1000000000, 'satu miliar rupiah'],
             [9876543210, 'sembilan miliar delapan ratus tujuh puluh enam juta lima ratus empat puluh tiga ribu dua ratus sepuluh rupiah'],
             [200000000, 'dua ratus juta rupiah'],
+            [900500.5, 'sembilan ratus ribu lima ratus rupiah lima puluh sen'],
             [900500.50, 'sembilan ratus ribu lima ratus rupiah lima puluh sen'],
+            [900500.505, 'sembilan ratus ribu lima ratus rupiah lima puluh satu sen'],
             ['900500.500', 'sembilan ratus ribu lima ratus rupiah lima ratus sen'],
           ];
     }

tests/RegularNumberTest.php

@@ -78,6 +78,7 @@ public function dataProvider()
             [1234567890123456, 'satu kuadriliun dua ratus tiga puluh empat triliun lima ratus enam puluh tujuh miliar delapan ratus sembilan puluh juta seratus dua puluh tiga ribu empat ratus lima puluh enam'],
             [123456.79, 'seratus dua puluh tiga ribu empat ratus lima puluh enam koma tujuh sembilan'],
             [100502.50, 'seratus ribu lima ratus dua koma lima'],
+            [100502.505, 'seratus ribu lima ratus dua koma lima nol lima'],
             ['100502.50', 'seratus ribu lima ratus dua koma lima nol'],
             ['-1000000', 'minus satu juta'],
         ];