diff --git a/tests/std/core/012_new_functions.phpt b/tests/std/core/012_new_functions.phpt
new file mode 100644
index 00000000..30b544dd
--- /dev/null
+++ b/tests/std/core/012_new_functions.phpt
@@ -0,0 +1,148 @@
+--TEST--
+New stdlib functions - realpath, gettype, uniqid, ucfirst, reset, end, ksort, array_reverse, array_diff, max, min, floor, ceil
+--FILE--
+<?php
+
+echo "== gettype() ==\n";
+var_dump(gettype(123));
+var_dump(gettype("hello"));
+var_dump(gettype(3.14));
+var_dump(gettype(true));
+var_dump(gettype([1,2,3]));
+var_dump(gettype(null));
+
+echo "== ucfirst() ==\n";
+echo ucfirst("hello") . "\n";
+echo ucfirst("world") . "\n";
+echo ucfirst("") . "\n";
+echo ucfirst("a") . "\n";
+echo ucfirst("123abc") . "\n";
+
+echo "== floor() / ceil() ==\n";
+var_dump(floor(3.14));
+var_dump(ceil(3.14));
+var_dump(floor(-3.14));
+var_dump(ceil(-3.14));
+var_dump(floor(5));
+var_dump(ceil(5));
+
+echo "== max() / min() ==\n";
+var_dump(max([1, 2, 3]));
+var_dump(min([1, 2, 3]));
+var_dump(max([-1, 0, 1]));
+var_dump(min([-1, 0, 1]));
+var_dump(max(["a", "b", "c"]));
+var_dump(min(["a", "b", "c"]));
+
+echo "== uniqid() ==\n";
+$id = uniqid();
+var_dump(strlen($id) > 10);
+$id2 = uniqid("pref_");
+var_dump(strncmp($id2, "pref_", 5) === 0);
+$id3 = uniqid("", true);
+var_dump(strlen($id3) > 20);
+
+echo "== reset() / end() ==\n";
+$arr = [1, 2, 3];
+var_dump(reset($arr));
+var_dump(end($arr));
+$arr2 = ['a' => 10, 'b' => 20, 'c' => 30];
+var_dump(reset($arr2));
+var_dump(end($arr2));
+
+echo "== ksort() ==\n";
+$arr3 = ['c' => 3, 'a' => 1, 'b' => 2];
+ksort($arr3);
+echo implode(',', array_keys($arr3)) . "\n";
+echo implode(',', array_values($arr3)) . "\n";
+
+echo "== array_reverse() ==\n";
+print_r(array_reverse([1, 2, 3]));
+print_r(array_reverse(['a' => 1, 'b' => 2, 'c' => 3]));
+print_r(array_reverse(['a' => 1, 'b' => 2, 'c' => 3], true));
+
+echo "== array_diff() ==\n";
+print_r(array_diff([1, 2, 3], [2, 4]));
+print_r(array_diff(['a' => 1, 'b' => 2, 'c' => 3], [2]));
+print_r(array_diff([1, 2, 3], [1, 2, 3]));
+
+echo "== realpath() ==\n";
+$path = realpath("/");
+var_dump($path !== false);
+
+?>
+--EXPECT--
+== gettype() ==
+string(7) "integer"
+string(6) "string"
+string(6) "double"
+string(7) "boolean"
+string(5) "array"
+string(4) "NULL"
+== ucfirst() ==
+Hello
+World
+
+A
+123abc
+== floor() / ceil() ==
+float(3)
+float(4)
+float(-4)
+float(-3)
+float(5)
+float(5)
+== max() / min() ==
+int(3)
+int(1)
+int(1)
+int(-1)
+string(1) "c"
+string(1) "a"
+== uniqid() ==
+bool(true)
+bool(true)
+bool(true)
+== reset() / end() ==
+int(1)
+int(3)
+int(10)
+int(30)
+== ksort() ==
+a,b,c
+1,2,3
+== array_reverse() ==
+Array
+(
+    [0] => 3
+    [1] => 2
+    [2] => 1
+)
+Array
+(
+    [0] => 3
+    [1] => 2
+    [2] => 1
+)
+Array
+(
+    [c] => 3
+    [b] => 2
+    [a] => 1
+)
+== array_diff() ==
+Array
+(
+    [0] => 1
+    [2] => 3
+)
+Array
+(
+    [a] => 1
+    [c] => 3
+)
+Array
+(
+)
+== realpath() ==
+bool(true)