Keep local cached images fresh if file exists.

Updates the cache_images() function to `touch` images if the file exists already. Some sites (e.g. news) re-use stock images and this change updates the local file's modified time every time the image is referenced in new articles. This should prevent the local file from being expired/deleted only to be re-cached later on.

diff --git a/include/rssfuncs.php b/include/rssfuncs.php
index a922516cd71b71633f4cc24b086b84a71d2fb5c7..7ea0bf0c88e3bfa5f811d529623e257203fa8b0b 100644 (file)
--- a/include/rssfuncs.php
+++ b/include/rssfuncs.php
@@ -1248,6 +1248,8 @@
                                        if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
                                                file_put_contents($local_filename, $file_content);
                                        }
+                               } else {
+                                       touch($local_filename);
                                }
                        }
                }