Implementation of EXACT dummy function

Classes/PHPExcel/Calculation/TextData.php

@@ -225,6 +225,28 @@ public static function DOLLAR($value = 0, $decimals = 2)
 
     }
 
+    /**
+     * The Microsoft Excel EXACT function compares two strings
+     * and returns TRUE if both values are the same. Otherwise, it will return FALSE.
+     *
+     * Note: The EXACT function is case-sensitive when it compares the two strings.
+     *
+     * @param string $text1
+     * @param string $text2
+     * @return string
+     */
+    public static function EXACT($text1, $text2) {
+        $text1 = PHPExcel_Calculation_Functions::flattenSingleValue($text1);
+        $text2 = PHPExcel_Calculation_Functions::flattenSingleValue($text2);
+
+        if(is_string($text1) && is_string($text2)){
+            if(0 === strcmp($text1, $text2)){
+                return PHPExcel_Calculation::getTRUE();
+            }
+        }
+        // @TODO Should divergent types be handled by this function (integer ...)?
+        return PHPExcel_Calculation::getFALSE();
+    } // function EXACT()
 
     /**
      * SEARCHSENSITIVE

unitTests/Classes/PHPExcel/Calculation/TextDataTest.php

@@ -289,6 +289,22 @@ public function providerDOLLAR()
     	return new testDataFileIterator('rawTestData/Calculation/TextData/DOLLAR.data');
 	}
 
+	/**
+	 * @dataProvider providerEXACT
+	 */
+	public function testEXACT()
+	{
+	    $args = func_get_args();
+	    $expectedResult = array_pop($args);
+	    $result = call_user_func_array(array('PHPExcel_Calculation_TextData','EXACT'),$args);
+	    $this->assertEquals($expectedResult, $result);
+	}
+
+	public function providerEXACT()
+	{
+	    return new testDataFileIterator('rawTestData/Calculation/TextData/EXACT.data');
+	}
+
     /**
      * @dataProvider providerFIXED
      */

unitTests/Classes/PHPExcel/Reader/XEEValidatorTest.php

@@ -26,9 +26,9 @@ public function testInvalidXML($filename)
 
     public function providerInvalidXML()
     {
-        $tests = [];
+        $tests = array();
         foreach(glob('rawTestData/Reader/XEETestInvalid*.xml') as $file) {
-            $tests[] = [realpath($file), true];
+            $tests[] = array(realpath($file), true);
         }
         return $tests;
 	}
@@ -45,9 +45,9 @@ public function testValidXML($filename, $expectedResult)
 
     public function providerValidXML()
     {
-        $tests = [];
+        $tests = array();
         foreach(glob('rawTestData/Reader/XEETestValid*.xml') as $file) {
-            $tests[] = [realpath($file), file_get_contents($file)];
+            $tests[] = array(realpath($file), file_get_contents($file));
         }
         return $tests;
 	}

unitTests/rawTestData/Calculation/TextData/EXACT.data

@@ -0,0 +1,2 @@
+"Hello World",	"Hello World",	"TRUE"
+"Hello World",  "hello world",  "FALSE"