Array subscription test.

tests/array_subscription.aer

@@ -0,0 +1,20 @@
+class Program {
+
+	int main() {
+		int[] $arr1;
+		int[] $arr2 = {0, 0};
+		float[] $arr3 = {1, 4.5};
+		$arr1 = {1, 2, 3, 4, 5};
+		$arr1[] = 6;
+		$arr1[] = {7};
+		$arr1[] = {'test' => 8};
+		$arr1[] = $arr2;
+		$arr3[] = {4, 5, 6.5};
+		$arr3[] = 7.2;
+		$arr3[] = 9;
+		var_dump($arr1);
+		var_dump($arr3);
+		return 0;
+	}
+
+}

tests/array_subscription.exp

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+array(int, 9) {
+ [0] =>
+  int(1)
+ [1] =>
+  int(2)
+ [2] =>
+  int(3)
+ [3] =>
+  int(4)
+ [4] =>
+  int(5)
+ [5] =>
+  int(6)
+ [6] =>
+  array(int, 1) {
+   [0] =>
+    int(7)
+   }
+ [7] =>
+  array(int, 1) {
+   [test] =>
+    int(8)
+   }
+ [8] =>
+  array(int, 2) {
+   [0] =>
+    int(0)
+   [1] =>
+    int(0)
+   }
+ }
+array(float, 5) {
+ [0] =>
+  float(1)
+ [1] =>
+  float(4.5)
+ [2] =>
+  array(float, 3) {
+   [0] =>
+    float(4)
+   [1] =>
+    float(5)
+   [2] =>
+    float(6.5)
+   }
+ [3] =>
+  float(7.2)
+ [4] =>
+  float(9)
+ }