--TEST--
Ensure __autoload() recursion is guarded for multiple lookups of same class using difference case.
--FILE--
<?php
spl_autoload_register(function ($name) {
  echo "autoload $name\n";
  class_exists("undefinedCLASS");
});

class_exists("unDefinedClass");
?>
--EXPECTF--
autoload unDefinedClass