From 33fb226abf8f10ee4d75ac1af7a7cb684b318efb Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Fri, 13 Jan 2006 20:13:58 +0000
Subject: [PATCH] * Add wfClone() wrapper since we're still using PHP 4 on some
 servers.

---
 RELEASE-NOTES                |  1 +
 includes/GlobalFunctions.php | 13 +++++++++++++
 includes/Linker.php          |  2 +-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 54891e6c9d..306f09cb32 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -481,6 +481,7 @@ fully support the editing toolbar, but was found to be too confusing.
   page view (comes after parser cache, if used). Patch by ThomasV.
 * Linker::formatComment corrupted the passed title object on PHP 5
   if the comment included a section link. Use clone() to make a safe copy.
+* Add wfClone() wrapper since we're still using PHP 4 on some servers.
 
 
 === Caveats ===
diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index 9349499a02..1e850e777f 100644
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -111,6 +111,19 @@ if ( !function_exists( 'array_diff_key' ) ) {
 if ( ! function_exists( 'ctype_alnum' ) )
 	require_once 'compatability/ctype.php';
 
+/**
+ * Wrapper for clone() for PHP 4, for the moment.
+ * PHP 5 won't let you declare a 'clone' function, even conditionally,
+ * so it has to be a wrapper with a different name.
+ */
+function wfClone( $object ) {
+	// WARNING: clone() is not a function in PHP 5, so function_exists fails.
+	if( version_compare( PHP_VERSION, '5.0' ) < 0 ) {
+		return $object;
+	} else {
+		return clone( $object );
+	}
+}
 
 /**
  * Where as we got a random seed
diff --git a/includes/Linker.php b/includes/Linker.php
index ffe062e354..9ac52a2ab6 100644
--- a/includes/Linker.php
+++ b/includes/Linker.php
@@ -694,7 +694,7 @@ class Linker {
 				# This is hackish but should work in most cases.
 				$section = str_replace( '[[', '', $section );
 				$section = str_replace( ']]', '', $section );
-				$sectionTitle = clone( $title );
+				$sectionTitle = wfClone( $title );
 				$sectionTitle->mFragment = $section;
 				$link = $this->makeKnownLinkObj( $sectionTitle, wfMsg( 'sectionlink' ) );
 			}
-- 
2.20.1