Added ArrayHelper::multisort() test.

framework/util/ArrayHelper.php

@@ -243,7 +243,7 @@ class ArrayHelper
 	 * @throws \yii\base\BadParamException if the $ascending or $sortFlag parameters do not have
 	 * correct number of elements as that of $key.
 	 */
-	public static function sort(&$array, $key, $ascending = true, $sortFlag = SORT_REGULAR)
+	public static function multisort(&$array, $key, $ascending = true, $sortFlag = SORT_REGULAR)
 	{
 		$keys = is_array($key) ? $key : array($key);
 		if (empty($keys) || empty($array)) {
@@ -273,10 +273,10 @@ class ArrayHelper
 			} else {
 				$args[] = static::getColumn($array, $key);
 			}
-			$args[] = $ascending[$i];
+			$args[] = $ascending[$i] ? SORT_ASC : SORT_DESC;
 			$args[] = $flag;
 		}
-		$args[] &= $array;
+		$args[] = &$array;
 		call_user_func_array('array_multisort', $args);
 	}
 }
\ No newline at end of file

tests/unit/framework/util/ArrayHelperTest.php

+<?php
+
+namespace yiiunit\framework\db;
+
+use yii\util\ArrayHelper;
+
+class ArrayHelperTest extends \yii\test\TestCase
+{
+	public function testMerge()
+	{
+
+
+	}
+
+	public function testMultisort()
+	{
+		// single key
+		$array = array(
+			array('name' => 'b', 'age' => 3),
+			array('name' => 'a', 'age' => 1),
+			array('name' => 'c', 'age' => 2),
+		);
+		ArrayHelper::multisort($array, 'name');
+		$this->assertEquals(array('name' => 'a', 'age' => 1), $array[0]);
+		$this->assertEquals(array('name' => 'b', 'age' => 3), $array[1]);
+		$this->assertEquals(array('name' => 'c', 'age' => 2), $array[2]);
+
+		// multiple keys
+		$array = array(
+			array('name' => 'b', 'age' => 3),
+			array('name' => 'a', 'age' => 2),
+			array('name' => 'a', 'age' => 1),
+		);
+		ArrayHelper::multisort($array, array('name', 'age'));
+		$this->assertEquals(array('name' => 'a', 'age' => 1), $array[0]);
+		$this->assertEquals(array('name' => 'a', 'age' => 2), $array[1]);
+		$this->assertEquals(array('name' => 'b', 'age' => 3), $array[2]);
+
+		// case-insensitive
+		$array = array(
+			array('name' => 'a', 'age' => 3),
+			array('name' => 'b', 'age' => 2),
+			array('name' => 'A', 'age' => 1),
+		);
+		ArrayHelper::multisort($array, array('name', 'age'), SORT_ASC, array(SORT_STRING|SORT_FLAG_CASE, SORT_REGULAR));
+		$this->assertEquals(array('name' => 'A', 'age' => 1), $array[0]);
+		$this->assertEquals(array('name' => 'a', 'age' => 3), $array[1]);
+		$this->assertEquals(array('name' => 'b', 'age' => 2), $array[2]);
+	}
+}