return type casting for arrays

tests/src/lib.rs

@@ -2,8 +2,8 @@ use std::fmt::Debug;
 
 use crate::imported::imported_fn;
 use ivory::externs::printf;
-use ivory::PhpVal;
 use ivory::{ivory_export, ivory_module};
+use ivory::{ArrayKey, PhpVal};
 
 mod imported;
 
@@ -66,6 +66,30 @@ fn return_string() -> String {
     "some string data".to_string()
 }
 
+#[ivory_export]
+fn return_array_simple() -> Vec<i32> {
+    vec![-10, 10, 0]
+}
+
+#[ivory_export]
+fn return_array_gap() -> Vec<(u32, i32)> {
+    vec![(0u32, -10), (1, 10), (10, 0)]
+}
+
+#[ivory_export]
+fn return_array_mixed() -> Vec<(ArrayKey, PhpVal)> {
+    vec![
+        (0u32.into(), PhpVal::from(-10)),
+        ("foo".to_string().into(), PhpVal::from(10)),
+        ("bar".to_string().into(), PhpVal::from(0.5)),
+    ]
+}
+
+#[ivory_export]
+fn return_array_nested() -> Vec<Vec<i32>> {
+    vec![vec![1, 2], vec![3, 4]]
+}
+
 ivory_module!({
     name: "tests",
     version: "0.0.1",

tests/tests/tests.rs

@@ -105,6 +105,26 @@ test_return!(
     "return_string",
     "Command line code:1:\nstring(16) \"some string data\"\n"
 );
+test_return!(
+    test_return_array_simple,
+    "return_array_simple",
+    "Command line code:1:\narray(3) {\n  [0] =>\n  int(-10)\n  [1] =>\n  int(10)\n  [2] =>\n  int(0)\n}\n"
+);
+test_return!(
+    test_return_array_gap,
+    "return_array_gap",
+    "Command line code:1:\narray(3) {\n  [0] =>\n  int(-10)\n  [1] =>\n  int(10)\n  [10] =>\n  int(0)\n}\n"
+);
+test_return!(
+    test_return_array_mixed,
+    "return_array_mixed",
+    "Command line code:1:\narray(3) {\n  [0] =>\n  int(-10)\n  \'foo\' =>\n  int(10)\n  \'bar\' =>\n  double(0.5)\n}\n"
+);
+test_return!(
+    test_return_array_nested,
+    "return_array_nested",
+    "Command line code:1:\narray(2) {\n  [0] =>\n  array(2) {\n    [0] =>\n    int(1)\n    [1] =>\n    int(2)\n  }\n  [1] =>\n  array(2) {\n    [0] =>\n    int(3)\n    [1] =>\n    int(4)\n  }\n}\n"
+);
 
 #[test]
 fn test_imported() {