Added a note about PHP environment variables to the PHP test file (#16)

diff --git a/mod_authnz_external/test/test.pipe.php b/mod_authnz_external/test/test.pipe.php
index 7d19c2436b06e6a9420fb2c82b8005d909de056e..34ad74806728851513b30454b18da369c4f33778 100755 (executable)
--- a/mod_authnz_external/test/test.pipe.php
+++ b/mod_authnz_external/test/test.pipe.php
@@ -20,6 +20,8 @@ $pass = trim(fgets(STDIN));
 // Print them to the error_log file
 fwrite(STDERR, $prog . ": user='" . $user . "' pass='" . $pass . "'\n");
 
+// NOTE: $_ENV is only populated if the "variables_order" php.ini setting 
+//       contains "E". Alternatively use getenv(). See GitHub issue #16.
 foreach ($_ENV as $k => $v)
 {
        fwrite(STDERR, $prog . ': ' . $k . '=' . $v . "\n");