1 files changed, 12 insertions, 0 deletions
diff --git a/init.php b/init.php
index 4d17845..5a117c0 100644
--- a/init.php
+++ b/init.php
@@ -175,6 +175,18 @@ class Data_Migration extends Plugin {
 
 				if (count($batch["articles"]) != $batch_size)
 					break;
+
+				// flush all that used memory
+				if ($zip->close() !== TRUE) {
+					Debug::log("write error while saving data to $output_file");
+					exit(3);
+				}
+				$zip = new ZipArchive();
+
+				if ($zip->open($output_file) !== TRUE) {
+					Debug::log("unable to reopen $output_file");
+					exit(3);
+				}
 			}
 
 			if ($zip->close() !== TRUE) {