diff --git a/.idea/php-test-framework.xml b/.idea/php-test-framework.xml
new file mode 100644
index 0000000..c092999
--- /dev/null
+++ b/.idea/php-test-framework.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PhpTestFrameworkVersionCache">
+    <tools_cache>
+      <tool tool_name="PHPUnit">
+        <cache>
+          <versions>
+            <info id="Local/vendor/autoload.php" version="9.6.20" />
+          </versions>
+        </cache>
+      </tool>
+    </tools_cache>
+  </component>
+</project>
\ No newline at end of file
diff --git a/tests/wip/php/funcTest.php b/tests/wip/php/funcTest.php
new file mode 100644
index 0000000..5ae0187
--- /dev/null
+++ b/tests/wip/php/funcTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace {
+  function tltf_zero(): int { return 0; }
+}
+
+namespace nur\sery\wip\php\impl {
+  function nptf_zero(): int { return 0; }
+}
+
+namespace nur\sery\wip\php {
+  use nulib\tests\TestCase;
+
+  class funcTest extends TestCase {
+    function testSimple() {
+      $func = null; self::assertFalse(func::verifix_simple($func));
+      $func = false; self::assertFalse(func::verifix_simple($func));
+      $func = ""; self::assertFalse(func::verifix_simple($func));
+
+      $func = 'tltf_zero'; self::assertTrue(func::verifix_simple($func));
+      self::assertSame([false, "tltf_zero"], $func);
+      $func = 'tltf_zero'; self::assertTrue(func::verifix_simple($func, false));
+      self::assertSame([false, "tltf_zero"], $func);
+      
+      $func = 'nur\sery\wip\php\impl\nptf_zero'; self::assertTrue(func::verifix_simple($func));
+      self::assertSame([false, 'nur\sery\wip\php\impl\nptf_zero'], $func);
+      $func = 'nur\sery\wip\php\impl\nptf_zero'; self::assertTrue(func::verifix_simple($func, false));
+      self::assertSame([false, 'nur\sery\wip\php\impl\nptf_zero'], $func);
+      
+      $func = 'inexistant_function_xxx'; self::assertFalse(func::verifix_simple($func));
+      $func = 'inexistant_function_xxx'; self::assertTrue(func::verifix_simple($func, false));
+      self::assertSame([false, "inexistant_function_xxx"], $func);
+    }
+  }
+}
+