diff --git a/extlib/get_temp_dir.php b/extlib/get_temp_dir.php
new file mode 100644
index 0000000000..4ec96e5221
--- /dev/null
+++ b/extlib/get_temp_dir.php
@@ -0,0 +1,14 @@
+<?php
+if ( !function_exists('sys_get_temp_dir')) {
+	function sys_get_temp_dir() {
+		if (!empty($_ENV['TMP'])) { return realpath($_ENV['TMP']); }
+		if (!empty($_ENV['TMPDIR'])) { return realpath( $_ENV['TMPDIR']); }
+		if (!empty($_ENV['TEMP'])) { return realpath( $_ENV['TEMP']); }
+		$tempfile=tempnam(uniqid(rand(),TRUE),'');
+		if (file_exists($tempfile)) {
+			unlink($tempfile);
+		}
+		return realpath(dirname($tempfile));
+	}
+}
+?>