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+--TEST--
+Closure 001: Lambda without lexical variables
+--FILE--
+<?php
+
+$lambda1 = function () {
+ echo "Hello World!\n";
+};
+
+$lambda2 = function ($x) {
+ echo "Hello $x!\n";
+};
+
+var_dump(is_callable($lambda1));
+var_dump(is_callable($lambda2));
+$lambda1();
+$lambda2("Universe");
+call_user_func($lambda1);
+call_user_func($lambda2, "Universe");
+
+echo "Done\n";
+?>
+--EXPECT--
+bool(true)
+bool(true)
+Hello World!
+Hello Universe!
+Hello World!
+Hello Universe!
+Done