+/*
+ Open file for writing with creration of subfolders if needed.
+*/
+function force_open($fname)
+{
+ $file = pathinfo($fname);
+
+ $path = $fname[0] == '/' ? '/' : '';
+ $tree = explode('/', $file['dirname']);
+ foreach($tree as $level) {
+ $path .= $level;
+ if (!file_exists($path)) {
+ if (!mkdir($path)) {
+ return null;
+ }
+ }
+ $path .= '/';
+ }
+ return fopen($fname, 'w');
+}
+