Added static method and change convert to constructor

Author: phannaly

readme.md

@@ -26,21 +26,23 @@ Whenever you want to convert any datetime into Khmer language, just wrap it insi
 
 Firstly, you can import or instance class
 ```php
+// Using import namespace
 use Phanna\Converter\KhmerDatetime;
-....
-$khmer = new Phanna\Converter\KhmerDatetime;
+
+// Using fully-qualified class name
+$khmer = new Phanna\Converter\KhmerDatetime($date);
 ```
 
 After that you can you following method below.
 
 ```php
-$khmer = new KhmerDatetime;
-$date = date('Y-m-d'); // or specific date that you want
-// Example output 2019-01-22
+$date = '2019-01-22'; // or specific date that you want
+$khmer = new KhmerDatetime($date);
 
-$khmer->convert($date)->getDate();
+$khmer->getDate();
 // Output: ២០១៩-មករា-២២
 ```
+
 ### Available methods
 
 This library accept two date format
@@ -50,33 +52,44 @@ $date = '2019-01-22'; // Y-m-d
 // and
 $date = '2019/01/22'; // Y/m/d
 ```
-Some useful method in this library.
+There are two way of converting date
+    - One is passing date through constructor
+    - Second use date with static method
 
 ```php
-$khmer = new KhmerDatetime;
 $date = '2019-01-22';
 
-$khmer->convert($date)->getFullMonth();
+// With constructor
+$khmer = new KhmerDatetime($date);
+
+// With static method
+$khmer = KhmerDatetime::with($date);
+
+$khmer->getFullMonth();
 // Output: មករា
 
-$khmer->convert($date)->getFullYear();
+$khmer->getFullYear();
 // Output: ២០១៩
 
-$khmer->convert($date)->getFullDay();
+$khmer->getFullDay();
 // Output: ២២
 
 $date = '2019/01/22'; // forward slash format
-$khmer->convert($date)->getDate();
+$khmer->getDate();
 // Output: ២០១៩/មករា/២២
 
 $date = '2019-01-22'; // dash format
-$khmer->convert($date)->getDate();
+$khmer->getDate();
 // Output: ២០១៩-មករា-២២
 
 $date = '2019/01/22'; // Reverse from Y/m/d to d/m/Y
-$khmer->convert($date)->getDate('reverse');
+$khmer->getDate('reverse');
 // Output: ២២/មករា/២០១៩
 
+// Or wrap it in one line
+$date = '2019/01/22';
+KhmerDatetime::with($date)->getDate();
+// Output: ២០១៩/មករា/២២
 ```
 
 ## Contributing

src/KhmerDatetime.php

@@ -23,7 +23,7 @@ class KhmerDatetime
      */
     public $date;
 
-    public function convert($date)
+    public function __construct($date)
     {
         $this->date = $date;
         $this->khmerMonth = $this->getKhmerMonths();
@@ -33,6 +33,16 @@ public function convert($date)
         return $this;
     }
 
+    /**
+     * Immediately given date with static method
+     *
+     * @param  string $date
+     * @return static
+     */
+    public static function with($date) 
+    {
+        return new static($date);
+    }
     /**
      * Get full month name in Khmer.
      *

tests/KhmerDatetimeTest.php

@@ -8,8 +8,8 @@ class KhmerDatetimeTest extends \PHPUnit\Framework\TestCase
 
     public function setUp()
     {
-        $date = date('2019-01-22');
-        $this->khmer = (new KhmerDatetime())->convert($date);
+        $date = '2019-01-22';
+        $this->khmer = new KhmerDatetime($date);
     }
 
     public function test_get_full_month_in_khmer()
@@ -35,7 +35,7 @@ public function test_check_dash_format_date()
     public function test_check_forward_slash_format()
     {
         $date = date('2019/01/22');
-        $khmer = (new KhmerDatetime())->convert($date);
+        $khmer = new KhmerDatetime($date);
 
         $this->assertFalse($this->khmer->isForwardSlah());
         $this->assertTrue($khmer->isForwardSlah());
@@ -51,11 +51,18 @@ public function test_get_reverse_date_in_khmer()
         $this->assertEquals('២២-មករា-២០១៩', $this->khmer->getDate('revers'));
     }
 
+    public function test_with_static_method()
+    {
+        $date = date('2019-01-22');
+        $khmer = KhmerDatetime::with($date);
+        $this->assertEquals('២០១៩-មករា-២២', $khmer->getDate());
+    }
+
     public function test_throw_exception_when_wrong_format()
     {
         $this->expectException(\Exception::class);
 
         $date = date('2019\01\22');
-        $khmer = (new KhmerDatetime())->convert($date)->getDate();
+        $khmer = (new KhmerDatetime($date))->getDate();
     }
 }