Invalidate: Make sure CACHE_DIR exists before writing flags

kovshenin · Apr 19, 2022 · 4549a92 · 4549a92
1 parent 9f09c29
commit 4549a92
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/include/invalidate.php b/include/invalidate.php
@@ -134,7 +134,14 @@
 
 	$flags = null;
 	$path = CACHE_DIR . '/flags.json.php';
-	$mode = file_exists( $path ) ? 'r+' : 'w+';
+	$exists = file_exists( $path );
+	$mode = $exists ? 'r+' : 'w+';
+
+	// Make sure cache dir exists.
+	if ( ! $exists && ! wp_mkdir_p( CACHE_DIR ) ) {
+		return;
+	}
+
 	$f = fopen( $path, $mode );
 	$length = filesize( $path );