added convertors with test

src/PhpWord/Shared/Converter.php

@@ -217,6 +217,17 @@ class Converter
         return round($point / self::INCH_TO_POINT * self::INCH_TO_PIXEL * self::PIXEL_TO_EMU);
     }
 
+    /**
+     * Convert point to cm
+     *
+     * @param int $point
+     * @return float
+     */
+    public static function pointToCm($point = 1)
+    {
+        return $point / self::INCH_TO_POINT * self::INCH_TO_CM;
+    }
+
     /**
      * Convert EMU to pixel
      *
@@ -299,6 +310,7 @@ class Converter
         if ($value == '0') {
             return 0;
         }
+        $matches = array();
         if (preg_match('/^[+-]?([0-9]+\.?[0-9]*)?(px|em|ex|%|in|cm|mm|pt|pc)$/i', $value, $matches)) {
             $size = $matches[1];
             $unit = $matches[2];
@@ -332,4 +344,37 @@ class Converter
     {
         return self::pointToTwip(self::cssToPoint($value));
     }
+
+    /**
+     * Transforms a size in CSS format (eg. 10px, 10px, ...) to pixel
+     *
+     * @param string $value
+     * @return float
+     */
+    public static function cssToPixel($value)
+    {
+        return self::pointToPixel(self::cssToPoint($value));
+    }
+
+    /**
+     * Transforms a size in CSS format (eg. 10px, 10px, ...) to cm
+     *
+     * @param string $value
+     * @return float
+     */
+    public static function cssToCm($value)
+    {
+        return self::pointToCm(self::cssToPoint($value));
+    }
+
+    /**
+     * Transforms a size in CSS format (eg. 10px, 10px, ...) to emu
+     *
+     * @param string $value
+     * @return float
+     */
+    public static function cssToEmu($value)
+    {
+        return self::pointToEmu(self::cssToPoint($value));
+    }
 }

tests/PhpWord/Shared/ConverterTest.php

@@ -29,6 +29,7 @@ class ConverterTest extends \PHPUnit\Framework\TestCase
      */
     public function testUnitConversions()
     {
+        $values = array();
         $values[] = 0; // zero value
         $values[] = rand(1, 100) / 100; // fraction number
         $values[] = rand(1, 100); // integer
@@ -79,6 +80,9 @@ class ConverterTest extends \PHPUnit\Framework\TestCase
             $result = Converter::pointToTwip($value);
             $this->assertEquals($value * 20, $result);
 
+            $result = Converter::pointToCm($value);
+            $this->assertEquals($value * 0.035277778, $result, '', 0.00001);
+
             $result = Converter::pointToPixel($value);
             $this->assertEquals($value / 72 * 96, $result);
 
@@ -105,6 +109,7 @@ class ConverterTest extends \PHPUnit\Framework\TestCase
     public function testHtmlToRGB()
     {
         // Prepare test values [ original, expected ]
+        $values = array();
         $values[] = array('#FF99DD', array(255, 153, 221)); // With #
         $values[] = array('FF99DD', array(255, 153, 221)); // 6 characters
         $values[] = array('F9D', array(255, 153, 221)); // 3 characters